| acetylcholine | (noun) a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems | - |
|---|
| adrenaline | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, epinephrin, epinephrine |
|---|
| airline | (noun) a commercial enterprise that provides scheduled flights for passengers | Synonyms: airline business, airway |
|---|
| (noun) a hose that carries air under pressure | Synonyms: air hose |
| aminophylline | (noun) a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis | - |
|---|
| amitriptyline | (noun) a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications | Synonyms: amitriptyline hydrochloride, Elavil |
|---|
| aniline | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aminobenzine, aniline oil, phenylamine |
|---|
| anopheline | (noun) any mosquito of the genus Anopheles | - |
|---|
| balkline | (noun) line across a billiard table behind which the cue balls are placed at the start of a game | Synonyms: baulk-line, string line |
|---|
| baseline | (noun) the lines a baseball player must follow while running the bases | - |
|---|
| (noun) the back line bounding each end of a tennis or handball court; when serving the server must not step over this line | Synonyms: service line |
| (noun) an imaginary line or standard by which things are measured or compared | - |
| beeline | (noun) the most direct route | - |
|---|
| bloodline | (noun) ancestry of a purebred animal | Synonyms: pedigree |
|---|
| (noun) the hereditary derivation of an individual | Synonyms: ancestry, blood, blood line, descent, line, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| borderline | (noun) a line that indicates a boundary | Synonyms: border, boundary line, delimitation, mete |
|---|
| bowline | (noun) a loop knot that neither slips nor jams | Synonyms: bowline knot |
|---|
| breadline | (noun) a queue of people waiting for free food | Synonyms: bread line |
|---|
| centerline | (noun) a line that bisects a plane figure | Synonyms: center line |
|---|
| chlortetracycline | (noun) a yellow crystalline antibiotic (trade name Aureomycin) used to treat certain bacterial and rickettsial diseases | Synonyms: Aureomycin |
|---|
| choline | (noun) a B-complex vitamin that is a constituent of lecithin; essential in the metabolism of fat | - |
|---|
| citrulline | (noun) an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine | - |
|---|
| clothesline | (noun) a cord on which clothes are hung to dry | - |
|---|
| coastline | (noun) the outline of a coast | - |
|---|
| compline | (noun) last of the seven canonical hours just before retiring | Synonyms: complin |
|---|
| copaline | (noun) partly mineralized copal dug from the ground | Synonyms: copalite, fossil copal |
|---|
| crinoline | (noun) a stiff coarse fabric used to stiffen hats or clothing | - |
|---|
| (noun) a full stiff petticoat made of crinoline fabric | - |
| (noun) a skirt stiffened with hoops | Synonyms: hoopskirt |
| dateline | (noun) a line at the beginning of a news article giving the date and place of origin of the news dispatch | - |
|---|
| (noun) an imaginary line on the surface of the earth following (approximately) the 180th meridian | Synonyms: date line, International Date Line |
| deadline | (noun) the point in time at which something must be completed | - |
|---|
| decline | (noun) a downward slope or bend | Synonyms: declension, declination, declivity, descent, downslope, fall |
|---|
| (noun) a gradual decrease; as of stored charge or current | Synonyms: decay |
| (noun) change toward something smaller or lower | Synonyms: diminution |
| (noun) a condition inferior to an earlier condition; a gradual falling off from a better state; decline | Synonyms: declination |
| discipline | (noun) training to improve strength or self-control | - |
|---|
| (noun) the act of disciplining | Synonyms: correction |
| (noun) the trait of being well behaved | - |
| (noun) a branch of knowledge | Synonyms: bailiwick, field, field of study, study, subject, subject area, subject field |
| (noun) a system of rules of conduct or method of practice | - |
| doxycycline | (noun) an antibiotic derived from tetracycline that is effective against many infections | Synonyms: Vibramycin |
|---|
| dropline | (noun) a headline with the top line flush left and succeeding lines indented to the right | Synonyms: drop line, stagger head, staggered head, stephead, stepped line |
|---|
| fedelline | (noun) extremely fine pasta thinner than vermicelli | - |
|---|
| feline | (noun) any of various lithe-bodied roundheaded fissiped mammals, many with retractile claws | Synonyms: felid |
|---|
| gasoline | (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, petrol |
|---|
| glyoxaline | (noun) an organic base C3H4N2; a histamine inhibitor | Synonyms: imidazole, iminazole |
|---|
| guideline | (noun) a rule or principle that provides guidance to appropriate behavior | Synonyms: guidepost, rule of thumb |
|---|
| (noun) a detailed plan or explanation to guide you in setting standards or determining a course of action | Synonyms: road map |
| (noun) a light line that is used in lettering to help align the letters | - |
| hairline | (noun) the natural margin formed by hair on the head | - |
|---|
| (noun) a very thin line | - |
| handline | (noun) a fishing line managed principally by hand | Synonyms: hand line |
|---|
| (noun) (climbing) a line that can be hung onto with hands while climbing up or down a steep or slick section for limited protection. | - |
| headline | (noun) the heading or caption of a newspaper article | Synonyms: newspaper headline |
|---|
| hemline | (noun) the line formed by the lower edge of a skirt or coat | - |
|---|
| hipline | (noun) the line formed by the lower edge of hip-length garment | - |
|---|
| (noun) the line formed by measuring the hip at its greatest part | - |
| hotline | (noun) a telefone line that provides direct and prompt information or advice to the caller in relation to a specific subject | Synonyms: hot line |
|---|
| hyaline | (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyalin |
|---|
| hydroxyproline | (noun) a crystalline amino acid obtained from gelatin or collagen | - |
|---|
| hydroxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: oxytetracycline, oxytetracycline hydrochloride, Terramycin |
|---|
| incline | (noun) an inclined surface connecting two levels | Synonyms: ramp |
|---|
| (noun) an elevated geological formation | Synonyms: side, slope |
| indiscipline | (noun) the trait of lacking discipline | Synonyms: undiscipline |
|---|
| kaoline | (noun) a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper) | Synonyms: china clay, china stone, kaolin, porcelain clay, terra alba |
|---|
| landline | (noun) a telephone line that travels over terrestrial circuits | Synonyms: land line |
|---|
| lazuline | (noun) a light shade of blue | Synonyms: azure, cerulean, sapphire, sky-blue |
|---|
| lifeline | (noun) line thrown from a vessel that people can cling to in order to save themselves from drowning | - |
|---|
| (noun) line that raises or lowers a deep-sea diver | - |
| (noun) support that enables people to survive or to continue doing something (often by providing an essential connection) | - |
| (noun) a crease on the palm; its length is said by palmists to indicate how long you will live | Synonyms: life line, line of life |
| line | (noun) the principal activity in your life that you do to earn money | Synonyms: business, job, line of work, occupation |
|---|
| (noun) acting in conformity | - |
| (noun) something (as a cord or rope) that is long and thin and flexible | - |
| (noun) a conductor for transmitting electrical or optical signals or electric power | Synonyms: cable, transmission line |
| (noun) the road consisting of railroad track and roadbed | Synonyms: rail line, railway line |
| (noun) a commercial organization serving as a common carrier | - |
| (noun) a pipe used to transport liquids or gases | Synonyms: pipeline |
| (noun) a telephone connection | Synonyms: phone line, subscriber line, telephone circuit, telephone line |
| (noun) a particular kind of product or merchandise | Synonyms: business line, line of business, line of merchandise, line of products, product line |
| (noun) mechanical system in a factory whereby an article is conveyed through sites at which successive operations are performed on it | Synonyms: assembly line, production line |
| (noun) a conceptual separation or distinction | Synonyms: contrast, demarcation, dividing line |
| (noun) a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning | Synonyms: argument, argumentation, line of reasoning, logical argument |
| (noun) a mark that is long relative to its width | - |
| (noun) text consisting of a row of words written across a page or computer screen | - |
| (noun) a succession of notes forming a distinctive sequence | Synonyms: air, melodic line, melodic phrase, melody, strain, tune |
| (noun) a short personal letter | Synonyms: billet, note, short letter |
| (noun) (often plural) a means of communication or access | Synonyms: channel, communication channel |
| (noun) persuasive but insincere talk that is usually intended to deceive or impress | - |
| (noun) the hereditary derivation of an individual | Synonyms: ancestry, blood, blood line, bloodline, descent, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| (noun) a formation of people or things one behind another | - |
| (noun) a connected series of events or actions or developments | Synonyms: course |
| (noun) a formation of people or things one beside another | - |
| (noun) a spatial location defined by a real or imaginary unidimensional extent | - |
| (noun) in games or sports; a mark indicating positions or bounds of the playing area | - |
| (noun) a fortified position (especially one marking the most forward position of troops) | - |
| (noun) a single frequency (or very narrow band) of radiation in a spectrum | - |
| (noun) the maximum credit that a customer is allowed | Synonyms: bank line, credit line, line of credit, personal credit line, personal line of credit |
| (noun) space for one line of print (one column wide and 1/14 inch deep) used to measure advertising | Synonyms: agate line |
| (noun) a length (straight or curved) without breadth or thickness; the trace of a moving point | - |
| (noun) a slight depression or fold in the smoothness of a surface | Synonyms: crease, crinkle, furrow, seam, wrinkle |
| marline | (noun) a small usually tarred line of 2 strands | - |
|---|
| masculine | (noun) a gender that refers chiefly (but not exclusively) to males or to objects classified as male | - |
|---|
| mescaline | (noun) the hallucinatory alkaloid that is the active agent in mescal buttons | Synonyms: peyote |
|---|
| methacholine | (noun) parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity | Synonyms: Mecholyl |
|---|
| midline | (noun) the median plane of the body (or some part of the body) | Synonyms: midplane |
|---|
| milline | (noun) an advertising measure; one agate line appearing in one million copies of a publication | - |
|---|
| minocycline | (noun) tetracycline antibiotic (trade name Minocin) used to treat a variety of bacterial and rickettsial infections | Synonyms: Minocin |
|---|
| monocline | (noun) a geological formation in which all strata are inclined in the same direction | - |
|---|
| musteline | (noun) fissiped fur-bearing carnivorous mammals | Synonyms: mustelid, musteline mammal |
|---|
| myeline | (noun) a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers | Synonyms: medulla, myelin |
|---|
| naphazoline | (noun) vasoconstrictor (trade names Privine and Sudafed) used in nasal sprays to treat symptoms of nasal congestion and in eyedrops to treat eye irritation | Synonyms: Privine, Sudafed |
|---|
| neckline | (noun) the line formed by the edge of a garment around the neck | - |
|---|
| nepheline | (noun) a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels | Synonyms: nephelite |
|---|
| noradrenaline | (noun) a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses | Synonyms: norepinephrine |
|---|
| nortriptyline | (noun) a tricyclic antidepressant drug (trade name Pamelor) used along with psychotherapy to treat dysthymic depression; may interact dangerously if taken with other drugs | Synonyms: Pamelor |
|---|
| outline | (noun) a schematic or preliminary plan | Synonyms: schema, scheme |
|---|
| (noun) a sketchy summary of the main points of an argument or theory | Synonyms: abstract, precis, synopsis |
| (noun) the line that appears to bound an object | Synonyms: lineation |
| oxytetracycline | (noun) a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections | Synonyms: hydroxytetracycline, oxytetracycline hydrochloride, Terramycin |
|---|
| pentoxifylline | (noun) a drug (trade name Trental) used to treat claudication; believed to increase the flexibility of red blood cells so they can flow through the blood vessels to the legs and feet | Synonyms: Trental |
|---|
| pipeline | (noun) a pipe used to transport liquids or gases | Synonyms: line |
|---|
| (noun) gossip spread by spoken communication | Synonyms: grapevine, word of mouth |
| praline | (noun) cookie-sized candy made of brown sugar and butter and pecans | - |
|---|
| proline | (noun) an amino acid that is found in many proteins (especially collagen) | - |
|---|
| protriptyline | (noun) tricyclic antidepressant used to treat clinical depression | - |
|---|
| pyroxyline | (noun) highly flammable nitrocellulose used in making collodion and plastics and lacquers | Synonyms: pyroxylin |
|---|
| ratline | (noun) (nautical) a small horizontal rope between the shrouds of a sailing ship; they form a ladder for climbing aloft | Synonyms: ratlin |
|---|
| ridgeline | (noun) a long narrow range of hills | Synonyms: ridge |
|---|
| saline | (noun) an isotonic solution of sodium chloride and distilled water | Synonyms: saline solution |
|---|
| sertraline | (noun) a selective-serotonin reuptake inhibitor commonly prescribed as an antidepressant (trade name Zoloft) | Synonyms: Zoloft |
|---|
| setline | (noun) a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys) | Synonyms: spiller, trawl, trawl line, trotline |
|---|
| shoreline | (noun) a boundary line between land and water | - |
|---|
| sideline | (noun) an auxiliary activity | Synonyms: avocation, by-line, hobby, pursuit, spare-time activity |
|---|
| (noun) an auxiliary line of merchandise | - |
| (noun) a line that marks the side boundary of a playing field | Synonyms: out of bounds |
| skyline | (noun) the line at which the sky and Earth appear to meet | Synonyms: apparent horizon, horizon, sensible horizon, visible horizon |
|---|
| (noun) the outline of objects seen against the sky | - |
| slackline | (noun) a partially tensioned line for balance or walking | - |
|---|
| snapline | (noun) a chalked string used in the building trades to make a straight line on a vertical surface | Synonyms: chalk line, snap line |
|---|
| spline | (noun) a thin strip (wood or metal) | Synonyms: slat |
|---|
| (noun) a flexible strip (wood or rubber) used in drawing curved lines | - |
| storyline | (noun) the plot of a book or play or film | Synonyms: plot line |
|---|
| strapline | (noun) a secondary heading, especially one printed above another. | - |
|---|
| succinylcholine | (noun) a muscle relaxant for striated muscle that is used as an adjunct to anesthesia during certain surgical procedures | - |
|---|
| tapeline | (noun) measuring instrument consisting of a narrow strip (cloth or metal) marked in inches or centimeters and used for measuring lengths | Synonyms: tape, tape measure |
|---|
| tetracycline | (noun) an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections | Synonyms: Achromycin |
|---|
| theophylline | (noun) a colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator | Synonyms: Elixophyllin, Slo-Bid, Theobid |
|---|
| timberline | (noun) line marking the upper limit of tree growth in mountains or northern latitudes | Synonyms: timber line, tree line |
|---|
| timeline | (noun) a sequence of related events arranged in chronological order and displayed along a line (usually drawn left to right or top to bottom) | - |
|---|
| tolazoline | (noun) vasodilator that is used to treat spasms of peripheral blood vessels (as in acrocyanosis) | - |
|---|
| touchline | (noun) either of the sidelines in soccer or rugby | - |
|---|
| tourmaline | (noun) a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones | - |
|---|
| towline | (noun) (nautical) a rope used in towing | Synonyms: towing line, towing rope, towrope |
|---|
| tramline | (noun) the track on which trams or streetcars run | Synonyms: streetcar track, tramway |
|---|
| trampoline | (noun) gymnastic apparatus consisting of a strong canvas sheet attached with springs to a metal frame; used for tumbling | - |
|---|
| trotline | (noun) a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys) | Synonyms: setline, spiller, trawl, trawl line |
|---|
| underline | (noun) a line drawn underneath (especially under written matter) | Synonyms: underscore |
|---|