| gyroplane | (noun) an aircraft that is supported in flight by unpowered rotating horizontal wings (or blades); forward propulsion is provided by a conventional propeller | Synonyms: autogiro, autogyro |
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| headland | (noun) a natural elevation (especially a rocky one that juts out into the sea) | Synonyms: foreland, head, promontory |
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| heartland | (noun) the central region of a country or continent; especially a region that is important to a country or to a culture | - |
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| heathland | (noun) a tract of level wasteland; uncultivated land with sandy soil and scrubby vegetation | Synonyms: heath |
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| heulandite | (noun) a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium | - |
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| highland | (noun) elevated (e.g., mountainous) land | Synonyms: upland |
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| hinterland | (noun) a remote and undeveloped area | Synonyms: back country, backwoods, boondocks |
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| hollandaise | (noun) eggs and butter with lemon juice | - |
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| holocephalan | (noun) fish with high compressed head and a body tapering off into a long tail | Synonyms: holocephalian |
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| homeland | (noun) the country where you were born | Synonyms: country of origin, fatherland, mother country, motherland, native land |
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| houseplant | (noun) any of a variety of plants grown indoors for decorative purposes | - |
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| hydroplane | (noun) an airplane that can land on or take off from water | Synonyms: seaplane |
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| (noun) a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | Synonyms: hydrofoil |
| imbalance | (noun) lack of proportion; imbalance among the parts of something | Synonyms: disproportion, dissymmetry |
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| (noun) a lack of balance or state of disequilibrium | Synonyms: instability, unbalance |
| implant | (noun) a prosthesis placed permanently in tissue | - |
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| implantation | (noun) the act of planting or setting in the ground | - |
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| (noun) a surgical procedure that places something in the human body | - |
| (noun) (embryology) the organic process whereby a fertilized egg becomes implanted in the lining of the uterus of placental mammals | Synonyms: nidation |
| inhalant | (noun) a medication to be taken by inhaling it | Synonyms: inhalation |
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| (noun) something that is inhaled | - |
| inoculant | (noun) a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease | Synonyms: inoculum |
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| insulant | (noun) insulating material that reduces or prevents the transmission of heat or sound or electricity | Synonyms: insulation |
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| interlanguage | (noun) a common language used by speakers of different languages | Synonyms: koine, lingua franca |
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| island | (noun) a zone or area resembling an island | - |
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| (noun) a land mass (smaller than a continent) that is surrounded by water | - |
| islander | (noun) an inhabitant of an island | Synonyms: island-dweller |
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| jubilance | (noun) a feeling of extreme joy | Synonyms: exultation, jubilancy, jubilation |
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| jubilancy | (noun) a feeling of extreme joy | Synonyms: exultation, jubilance, jubilation |
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| kalansuwa | (noun) a cap that is wrapped around by a turban and worn by Muslim religious elders | - |
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| kalantas | (noun) Philippine timber tree having hard red fragrant wood | Synonyms: Cedrela calantas, Philippine cedar, Philippine mahogany, Toona calantas |
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| korlan | (noun) the fruit from the korlan tree. | - |
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| lanai | (noun) a veranda or roofed patio often furnished and used as a living room | - |
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| lance | (noun) a long pointed rod used as a tool or weapon | Synonyms: shaft, spear |
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| (noun) an implement with a shaft and barbed point used for catching fish | Synonyms: fishgig, fizgig, gig, spear |
| (noun) a surgical knife with a pointed double-edged blade; used for punctures and small incisions | Synonyms: lancet |
| lancelet | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: amphioxus |
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| lancer | (noun) (formerly) a cavalryman armed with a lance | - |
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| lancers | (noun) a quadrille for 8 or 16 couples | - |
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| lancet | (noun) a surgical knife with a pointed double-edged blade; used for punctures and small incisions | Synonyms: lance |
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| (noun) an acutely pointed Gothic arch, like a lance | Synonyms: lancet arch |
| lancetfish | (noun) large elongate scaleless oceanic fishes with sharp teeth and a long dorsal fin that resembles a sail | Synonyms: lancet fish, wolffish |
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| lancewood | (noun) source of most of the lancewood of commerce | Synonyms: lancewood tree, Oxandra lanceolata |
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| (noun) durable straight-grained wood of the lacewood tree; used for building and cabinetwork and tools | - |
| land | (noun) agriculture considered as an occupation or way of life | Synonyms: farming |
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| (noun) a politically organized body of people under a single government | Synonyms: body politic, commonwealth, country, nation, res publica, state |
| (noun) the people who live in a nation or country | Synonyms: country, nation |
| (noun) territory over which rule or control is exercised | Synonyms: demesne, domain |
| (noun) the territory occupied by a nation | Synonyms: country, state |
| (noun) the solid part of the earth's surface | Synonyms: dry land, earth, ground, solid ground, terra firma |
| (noun) material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use) | Synonyms: ground, soil |
| (noun) extensive landed property (especially in the country) retained by the owner for his own use | Synonyms: acres, demesne, estate, landed estate |
| (noun) the land on which real estate is located | - |
| (noun) a domain in which something is dominant | Synonyms: kingdom, realm |
| landau | (noun) a four-wheel covered carriage with a roof divided into two parts (front and back) that can be let down separately | - |
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| lander | (noun) a space vehicle that is designed to land on the moon or another planet | - |
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| landfall | (noun) the first sighting of land from the sea after a voyage (or flight over water) | - |
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| (noun) the seacoast first sighted on a voyage (or flight over water) | - |
| landfill | (noun) a low area that has been filled in | - |
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| landgrave | (noun) a count who had jurisdiction over a large territory in medieval Germany | - |
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| landholder | (noun) a holder or proprietor of land | Synonyms: landowner, property owner |
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| landholding | (noun) a holding in the form of land | - |
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| (noun) ownership of land; the state or fact of owning land | - |
| landing | (noun) the act of coming to land after a voyage | - |
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| (noun) the act of coming down to the earth (or other surface) | - |
| (noun) structure providing a place where boats can land people or goods | Synonyms: landing place |
| (noun) an intermediate platform in a staircase | - |
| landlady | (noun) a landlord who is a woman | - |
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| landler | (noun) a moderately slow Austrian country dance in triple time; involves spinning and clapping | - |
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| (noun) music in triple time for dancing the landler | - |
| landline | (noun) a telephone line that travels over terrestrial circuits | Synonyms: land line |
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| landlord | (noun) a landowner who leases to others | - |
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| landlubber | (noun) an inexperienced sailor; a sailor on the first voyage | Synonyms: landsman, lubber |
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| (noun) a person who lives and works on land | Synonyms: landman, landsman |
| landman | (noun) a person who lives and works on land | Synonyms: landlubber, landsman |
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| landmark | (noun) an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken | - |
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| (noun) a mark showing the boundary of a piece of land | - |
| (noun) an event marking a unique or important historical change of course or one on which important developments depend | Synonyms: turning point, watershed |
| (noun) the position of a prominent or well-known object in a particular landscape | - |
| landmass | (noun) a large continuous extent of land | Synonyms: land mass |
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| landowner | (noun) a holder or proprietor of land | Synonyms: landholder, property owner |
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| landrover | (noun) a car suitable for traveling over rough terrain | Synonyms: jeep |
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| landscape | (noun) a genre of art dealing with the depiction of natural scenery | Synonyms: landscape painting |
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| (noun) painting depicting an expanse of natural scenery | - |
| (noun) an extensive mental viewpoint | - |
| (noun) an expanse of scenery that can be seen in a single view | - |
| landscaper | (noun) someone who arranges features of the landscape or garden attractively | Synonyms: landscape architect, landscape gardener, landscapist |
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| landscaping | (noun) working as a landscape gardener | Synonyms: landscape gardening |
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| (noun) a garden laid out for esthetic effect | - |
| landscapist | (noun) someone who paints landscapes | - |
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| (noun) someone who arranges features of the landscape or garden attractively | Synonyms: landscape architect, landscape gardener, landscaper |
| landside | (noun) component consisting of a side piece opposite the moldboard | - |
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| landslide | (noun) a slide of a large mass of dirt and rock down a mountain or cliff | Synonyms: landslip |
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| (noun) an overwhelming electoral victory | - |
| landslip | (noun) a slide of a large mass of dirt and rock down a mountain or cliff | Synonyms: landslide |
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| landsman | (noun) an inexperienced sailor; a sailor on the first voyage | Synonyms: landlubber, lubber |
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| (noun) a person who lives and works on land | Synonyms: landlubber, landman |
| lane | (noun) a narrow way or road | - |
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| (noun) a well-defined track or path; for e.g. swimmers or lines of traffic | - |
| langbeinite | (noun) a mineral consisting of potassium magnesium double sulphate; used as a fertilizer | - |
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| langlaufer | (noun) a cross-country skier | - |
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| langley | (noun) unit of solar radiation | - |
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| langouste | (noun) large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters | Synonyms: crawfish, crayfish, rock lobster, sea crawfish, spiny lobster |
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| (noun) warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California | Synonyms: crayfish, rock lobster, spiny lobster |
| langoustine | (noun) caught in European waters; slenderer than American lobster | Synonyms: Norwegian lobster, scampo |
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| langsat | (noun) a small fruit with fleshy pulp; tastes like a combination of grape and grapefruit. | - |
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| (noun) East Indian tree bearing an edible yellow berry | Synonyms: langset, lanseh tree, Lansium domesticum |
| langset | (noun) East Indian tree bearing an edible yellow berry | Synonyms: langsat, lanseh tree, Lansium domesticum |
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| langsyne | (noun) past times remembered with nostalgia | Synonyms: auld langsyne, good old days, lang syne, old times |
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| language | (noun) the mental faculty or power of vocal communication | Synonyms: speech |
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| (noun) the cognitive processes involved in producing and understanding linguistic communication | Synonyms: linguistic process |
| (noun) a systematic means of communicating by the use of sounds or conventional symbols | Synonyms: linguistic communication |
| (noun) (language) communication by word of mouth | Synonyms: oral communication, speech, speech communication, spoken communication, spoken language, voice communication |
| (noun) the text of a popular song or musical-comedy number | Synonyms: lyric, words |
| (noun) a system of words used to name things in a particular discipline | Synonyms: nomenclature, terminology |
| languisher | (noun) a person who languishes | - |
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| languor | (noun) inactivity; showing an unusual lack of energy | Synonyms: flatness, lethargy, phlegm, sluggishness |
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| (noun) a relaxed comfortable feeling | Synonyms: dreaminess |
| (noun) a feeling of lack of interest or energy | Synonyms: lassitude, listlessness |
| (noun) oppressively still air | - |
| langur | (noun) slender long-tailed monkey of Asia | - |
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| laniard | (noun) (nautical) a line used for extending or fastening rigging on ships | Synonyms: lanyard |
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| (noun) a cord worn around the neck to hold a knife or whistle | Synonyms: lanyard |
| (noun) a cord with an attached hook that is used to fire certain types of cannon | Synonyms: lanyard |
| lankiness | (noun) a tall and thin physique | - |
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| lanolin | (noun) an emollient containing wool fat (a fatty substance obtained from the wool of sheep) | - |
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| (noun) a yellow viscous animal oil extracted from wool; a mixture of fatty acids and esters; used in some ointments and cosmetics | Synonyms: wool fat, wool grease |
| lansa | (noun) East Indian tart yellow berrylike fruit | Synonyms: lansat, lanseh, lanset |
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| lansat | (noun) East Indian tart yellow berrylike fruit | Synonyms: lansa, lanseh, lanset |
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| lanseh | (noun) East Indian tart yellow berrylike fruit | Synonyms: lansa, lansat, lanset |
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| lanset | (noun) East Indian tart yellow berrylike fruit | Synonyms: lansa, lansat, lanseh |
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| lansoprazole | (noun) antacid (trade name Prevacid) that suppresses acid secretion in the stomach | Synonyms: Prevacid |
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| lantana | (noun) a genus of about 150 species of flowering shrub, commonly known as shrub verbenas or lantanas | - |
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| lantern | (noun) light in a transparent protective case | - |
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| lanternfish | (noun) small fish having rows of luminous organs along each side; some surface at night | - |
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| lanthanide | (noun) any element of the lanthanide series (atomic numbers 57 through 71) | Synonyms: lanthanoid, lanthanon, rare-earth element, rare earth |
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| lanthanoid | (noun) any element of the lanthanide series (atomic numbers 57 through 71) | Synonyms: lanthanide, lanthanon, rare-earth element, rare earth |
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| lanthanon | (noun) any element of the lanthanide series (atomic numbers 57 through 71) | Synonyms: lanthanide, lanthanoid, rare-earth element, rare earth |
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| lanthanum | (noun) a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth | Synonyms: atomic number 57, La |
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| lanugo | (noun) the fine downy hair covering a human fetus; normally shed during the ninth month of gestation | - |
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| lanyard | (noun) (nautical) a line used for extending or fastening rigging on ships | Synonyms: laniard |
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| (noun) a cord worn around the neck to hold a knife or whistle | Synonyms: laniard |
| (noun) a cord with an attached hook that is used to fire certain types of cannon | Synonyms: laniard |
| leadplant | (noun) shrub of sandy woodlands and stream banks of western United States having hoary pinnate flowers and dull-colored racemose flowers; thought to indicate the presence of lead ore | Synonyms: Amorpha canescens, lead plant |
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| lepidomelane | (noun) a mica that is a biotite containing iron | - |
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| lilangeni | (noun) the basic unit of money in Swaziland; equal to 100 cents | - |
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| llano | (noun) an extensive grassy and nearly treeless plain (especially in Latin America) | - |
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| lotusland | (noun) an idyllic realm of contentment and self-indulgence | Synonyms: lotus land |
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| lowland | (noun) low level country | - |
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| mainland | (noun) the main land mass of a country or continent; as distinguished from an island or peninsula | - |
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| malanga | (noun) tropical American aroid having edible tubers that are cooked and eaten like yams or potatoes | Synonyms: spoonflower, tannia, Xanthosoma atrovirens, Xanthosoma sagittifolium, yautia |
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| marchland | (noun) district consisting of the area on either side of a border or boundary of a country or an area | Synonyms: border district, borderland, march |
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