| periodical | (noun) a publication that appears at fixed intervals | - |
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| peripheral | (noun) electronic equipment external to the circuit board that contains the CPU of a computer | Synonyms: computer peripheral, peripheral device |
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| perissodactyl | (noun) placental mammals having hooves with an odd number of toes on each foot | Synonyms: odd-toed ungulate, perissodactyl mammal |
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| personal | (noun) a short newspaper article about a particular person or group | - |
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| personnel | (noun) group of people willing to obey orders | Synonyms: force |
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| (noun) the department responsible for hiring and training and placing employees and for setting policies for personnel management | Synonyms: personnel department, personnel office, staff office |
| perusal | (noun) reading carefully with intent to remember | Synonyms: perusing, poring over, studying |
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| petal | (noun) part of the perianth that is usually brightly colored | Synonyms: flower petal |
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| petrel | (noun) relatively small long-winged tube-nosed bird that flies far from land | - |
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| petrochemical | (noun) any compound obtained from petroleum or natural gas | - |
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| petrol | (noun) a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines | Synonyms: gas, gasolene, gasoline |
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| pharmaceutical | (noun) drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment | Synonyms: pharmaceutic |
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| pharyngeal | (noun) a consonant articulated in the back of the mouth or throat | Synonyms: guttural, guttural consonant, pharyngeal consonant |
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| phenobarbital | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbitone, purple heart, sodium thiopental |
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| phenol | (noun) any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups | - |
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| (noun) a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally | Synonyms: carbolic acid, hydroxybenzene, oxybenzene, phenylic acid |
| phial | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampoule, ampul, ampule, vial |
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| photocell | (noun) a transducer used to detect and measure light and other radiations | Synonyms: electric eye, magic eye, photoconductive cell, photoelectric cell |
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| phytochemical | (noun) a chemical substance obtained from plants that is biologically active but not nutritive | - |
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| pickerel | (noun) any of several North American species of small pike | - |
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| (noun) flesh of young or small pike | - |
| pictorial | (noun) a periodical (magazine or newspaper) containing many pictures | - |
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| picul | (noun) a unit of weight used in some parts of Asia; approximately equal to 133 pounds (the load a grown man can carry) | - |
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| pigswill | (noun) wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk | Synonyms: pigwash, slop, slops, swill |
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| pigtail | (noun) a plait of braided hair | - |
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| pill | (noun) a dose of medicine in the form of a small pellet | Synonyms: lozenge, tab, tablet |
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| (noun) something that resembles a tablet of medicine in shape or size | - |
| (noun) a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception | Synonyms: anovulant, anovulatory drug, birth control pill, contraceptive pill, oral contraceptive, oral contraceptive pill |
| (noun) something unpleasant or offensive that must be tolerated or endured | - |
| (noun) a unpleasant or tiresome person | - |
| pimpernel | (noun) any of several plants of the genus Anagallis | - |
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| (noun) European garden herb with purple-tinged flowers and leaves that are sometimes used for salads | Synonyms: burnet bloodwort, Poterium sanguisorba, salad burnet |
| pinball | (noun) a game played on a sloping board; the object is to propel marbles against pins or into pockets | Synonyms: pinball game |
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| pindolol | (noun) an oral beta blocker (trade name Visken) used in treating hypertension | Synonyms: Visken |
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| pintail | (noun) long-necked river duck of the Old and New Worlds having elongated central tail feathers | Synonyms: Anas acuta, pin-tailed duck |
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| pinwheel | (noun) a circular firework that spins round and round emitting colored fire | Synonyms: catherine wheel |
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| (noun) a toy consisting of vanes of colored paper or plastic that is pinned to a stick and spins when it is pointed into the wind | Synonyms: pinwheel wind collector |
| (noun) a wheel that has numerous pins that are set at right angles to its rim | - |
| (noun) perennial subshrub of Tenerife having leaves in rosettes resembling pinwheels | Synonyms: Aeonium haworthii |
| pipal | (noun) fig tree of India noted for great size and longevity; lacks the prop roots of the banyan; regarded as sacred by Buddhists | Synonyms: bo tree, Ficus religiosa, peepul, pipal tree, pipul, sacred fig |
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| pipeful | (noun) the quantity of tobacco that can be smoked in a pipe at one time | - |
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| pipistrel | (noun) small European brown bat | Synonyms: pipistrelle, Pipistrellus pipistrellus |
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| pipul | (noun) fig tree of India noted for great size and longevity; lacks the prop roots of the banyan; regarded as sacred by Buddhists | Synonyms: bo tree, Ficus religiosa, peepul, pipal, pipal tree, sacred fig |
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| pistil | (noun) the female ovule-bearing part of a flower composed of ovary and style and stigma | - |
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| pistol | (noun) a firearm that is held and fired with one hand | Synonyms: handgun, shooting iron, side arm |
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| pitcherful | (noun) the quantity contained in a pitcher | Synonyms: pitcher |
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| pitfall | (noun) a trap in the form of a concealed hole | Synonyms: pit |
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| (noun) an unforeseen or unexpected or surprising difficulty | Synonyms: booby trap |
| pixel | (noun) (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot) | Synonyms: pel, picture element |
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| placental | (noun) mammals having a placenta; all mammals except monotremes and marsupials | Synonyms: eutherian, eutherian mammal, placental mammal |
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| planetesimal | (noun) one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system | - |
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| plateful | (noun) the quantity contained in a plate | Synonyms: plate |
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| playbill | (noun) a theatrical program | - |
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| playschool | (noun) a small informal nursery group meeting for half-day sessions | Synonyms: play group |
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| plimsoll | (noun) a light gym shoe with a rubber sole and a canvas top | - |
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| plural | (noun) the form of a word that is used to denote more than one | Synonyms: plural form |
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| pocketful | (noun) the quantity a pocket will hold | - |
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| podsol | (noun) a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer | Synonyms: podsol soil, podsolic soil, podzol, podzol soil |
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| podzol | (noun) a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer | Synonyms: podsol, podsol soil, podsolic soil, podzol soil |
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| pointel | (noun) a tool used by an engraver | Synonyms: graver, graving tool, pointrel |
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| pointrel | (noun) a tool used by an engraver | Synonyms: graver, graving tool, pointel |
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| pol | (noun) a person active in party politics | Synonyms: political leader, politician, politico |
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| poll | (noun) the counting of votes (as in an election) | - |
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| (noun) the top of the head | Synonyms: crown, pate |
| (noun) the part of the head between the ears | - |
| (noun) an inquiry into public opinion conducted by interviewing a random sample of people | Synonyms: canvass, opinion poll, public opinion poll |
| (noun) a tame parrot | Synonyms: poll parrot |
| polynomial | (noun) a mathematical function that is the sum of a number of terms | Synonyms: multinomial |
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| pommel | (noun) handgrip formed by the raised front part of a saddle | Synonyms: saddlebow |
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| (noun) an ornament in the shape of a ball on the hilt of a sword or dagger | Synonyms: knob |
| (noun) a handgrip that a gymnast uses when performing exercises on a pommel horse | - |
| pontifical | (noun) the vestments and other insignia of a pontiff (especially a bishop) | - |
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| ponytail | (noun) a hair style that draws the hair back so that it hangs down in back of the head like a pony's tail | - |
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| pool | (noun) any of various games played on a pool table having 6 pockets | Synonyms: pocket billiards |
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| (noun) an excavation that is (usually) filled with water | - |
| (noun) an association of companies for some definite purpose | Synonyms: consortium, syndicate |
| (noun) an organization of people or resources that can be shared | - |
| (noun) something resembling a pool of liquid | Synonyms: puddle |
| (noun) a small lake | Synonyms: pond |
| (noun) a small body of standing water (rainwater) or other liquid | Synonyms: puddle |
| (noun) any communal combination of funds | - |
| (noun) the combined stakes of the betters | Synonyms: kitty |
| poorwill | (noun) goatsucker of western North America | Synonyms: Phalaenoptilus nuttallii |
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| portal | (noun) a grand and imposing entrance (often extended metaphorically) | - |
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| (noun) a short vein that carries blood into the liver | Synonyms: hepatic portal vein, portal vein, vena portae |
| (noun) a site that the owner positions as an entrance to other sites on the internet | Synonyms: portal site |
| portrayal | (noun) representation by drawing or painting etc | Synonyms: delineation, depiction |
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| (noun) acting the part of a character on stage; dramatically representing the character by speech and action and gesture | Synonyms: characterization, enactment, personation |
| (noun) any likeness of a person, in any medium | Synonyms: portrait |
| (noun) a representation by picture or portraiture | Synonyms: depicting, depiction, portraying |
| (noun) a word picture of a person's appearance and character | Synonyms: portrait, portraiture |
| postdoctoral | (noun) a grant that funds postdoctoral study or research | Synonyms: post doc, postdoc |
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| potential | (noun) the difference in electrical charge between two points in a circuit expressed in volts | Synonyms: electric potential, potential difference, potential drop, voltage |
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| (noun) the inherent capacity for coming into being | Synonyms: potency, potentiality |
| potful | (noun) the quantity contained in a pot | Synonyms: pot |
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| poundal | (noun) a unit of force equal to the force that imparts an acceleration of 1 foot/sec/sec to a mass of 1 pound; equal to 0.1382 newtons | Synonyms: pdl |
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| pratfall | (noun) an embarrassing mistake | Synonyms: bloomer, blooper, blunder, boner, boo-boo, botch, bungle, flub, foul-up, fuckup |
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| (noun) a fall onto your buttocks | - |
| pregnanediol | (noun) a compound found in women's urine during certain phases of the menstrual cycle and in the urine of pregnant women | - |
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| preschool | (noun) an educational institution for children too young for elementary school | - |
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| pretrial | (noun) (law) a conference held before the trial begins to bring the parties together to outline discovery proceedings and to define the issues to be tried; more useful in civil than in criminal cases | Synonyms: pretrial conference |
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| pretzel | (noun) glazed and salted cracker typically in the shape of a loose knot | - |
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| principal | (noun) the educator who has executive authority for a school | Synonyms: head, head teacher, school principal |
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| (noun) an actor who plays a principal role | Synonyms: lead, star |
| (noun) the major party to a financial transaction at a stock exchange; buys and sells for his own account | Synonyms: dealer |
| (noun) (criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement | - |
| (noun) the original amount of a debt on which interest is calculated | - |
| (noun) capital as contrasted with the income derived from it | Synonyms: corpus, principal sum |
| processional | (noun) religious music used in a procession | Synonyms: prosodion |
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| proconsul | (noun) an anthropoid ape of the genus Proconsul | - |
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| (noun) a provincial governor of consular rank in the Roman Republic and Roman Empire | - |
| (noun) an official in a modern colony who has considerable administrative power | - |
| procural | (noun) the act of getting possession of something | Synonyms: procurance, procurement |
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| prodigal | (noun) a recklessly extravagant consumer | Synonyms: profligate, squanderer |
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| professional | (noun) a person engaged in one of the learned professions | Synonyms: professional person |
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| (noun) an authority qualified to teach apprentices | Synonyms: master |
| (noun) an athlete who plays for pay | Synonyms: pro |
| promposal | (noun) The act of asking someone to go to a prom with you | - |
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| pronominal | (noun) a phrase that functions as a pronoun | Synonyms: pronominal phrase |
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| propanal | (noun) a colorless liquid aldehyde | Synonyms: propionaldehyde |
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| propanediol | (noun) a sweet colorless, viscous, hygroscopic liquid used as an antifreeze and in brake fluid and also as a humectant in cosmetics and personal care items although it can be absorbed through the skin with harmful effects | Synonyms: propylene glycol |
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| propanol | (noun) a clear colorless volatile liquid (alcohol) used as a solvent and antiseptic | Synonyms: propyl alcohol |
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| propenal | (noun) a pungent colorless unsaturated liquid aldehyde made from propene | Synonyms: acrolein |
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| prophyll | (noun) a plant structure resembling a leaf | - |
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| proportional | (noun) one of the quantities in a mathematical proportion | - |
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| proposal | (noun) something proposed (such as a plan or assumption) | - |
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| (noun) the act of making a proposal | Synonyms: proposition |
| (noun) an offer of marriage | Synonyms: marriage offer, marriage proposal, proposal of marriage |
| propranolol | (noun) the first beta blocker (trade name Inderal) used in treating hypertension and angina pectoris and essential tremor | Synonyms: Inderal |
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| propyl | (noun) the monovalent organic group C3H7- obtained from propane | Synonyms: propyl group, propyl radical |
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| propylthiouracil | (noun) a crystalline compound used as an antithyroid drug in the treatment of goiter | - |
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| protocol | (noun) code of correct conduct | - |
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| (noun) forms of ceremony and etiquette observed by diplomats and heads of state | - |
| (noun) (computer science) rules determining the format and transmission of data | Synonyms: communications protocol |
| protomammal | (noun) probably warm-blooded; considered direct ancestor of mammals | Synonyms: therapsid |
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| provincial | (noun) a country person | Synonyms: bucolic, peasant |
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| (noun) (Roman Catholic Church) an official in charge of an ecclesiastical province acting under the superior general of a religious order | - |
| prowl | (noun) the act of prowling (walking about in a stealthy manner) | - |
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| pterodactyl | (noun) extinct flying reptile | - |
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| puffball | (noun) any of various fungi of the family Lycoperdaceae whose round fruiting body discharges a cloud of spores when mature | Synonyms: true puffball |
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| (noun) any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles | Synonyms: earthball, false truffle, hard-skinned puffball |
| pul | (noun) 100 puls equal 1 afghani in Afghanistan | - |
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| pull | (noun) the act of pulling; applying force to move something toward or with you | Synonyms: pulling |
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| (noun) a slow inhalation (as of tobacco smoke) | Synonyms: drag, puff |
| (noun) a sustained effort | - |
| (noun) a device used for pulling something | - |
| (noun) special advantage or influence | Synonyms: clout |
| (noun) the force used in pulling | - |
| (noun) a sharp strain on muscles or ligaments | Synonyms: twist, wrench |
| pumpernickel | (noun) bread made of coarse rye flour | Synonyms: black bread |
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| punchball | (noun) an inflated ball or bag that is suspended and punched for training in boxing | Synonyms: punch bag, punching bag, punching ball |
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| pupil | (noun) the contractile aperture in the center of the iris of the eye; resembles a large black dot | - |
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| (noun) a learner who is enrolled in an educational institution | Synonyms: educatee, student |
| (noun) a young person attending school (up through senior high school) | Synonyms: school-age child, schoolchild |
| purl | (noun) a basic knitting stitch made by putting the needle through the front of the stitch from the righthand side | Synonyms: purl stitch |
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| (noun) gold or silver wire thread | - |
| pursual | (noun) the act of pursuing in an effort to overtake or capture | Synonyms: chase, following, pursuit |
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| pushball | (noun) a game using a leather ball six feet in diameter; the two side try to push it across the opponents' goal | - |
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