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An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family.

A genus of dipterous insects including the horsefly or horse tick. -- Hip`po*bos"can, a.

A genus of lophobranch fishes of several species in which the head and neck have some resemblance to those of a horse; -- called also sea horse.

A fossil bivalve mollusk of the genus Hippurites, of many species, having a conical, cup-shaped under valve, with a flattish upper valve or lid. Hippurites are found only in the Cretaceous rocks.

A genus of leeches, including the common medicinal leech. See Leech.

A genus of birds including the swallows and martins.

A quadruped of the genus Sus, and allied genera of Suidæ; esp., the domesticated varieties of S. scrofa, kept for their fat and meat, called, respectively, lard and pork; swine; porker; specifically, a castrated boar; a barrow.

A harmless North American snake of the genus Heterodon, esp. H. platyrhynos; -- called also puffing adder, blowing adder, and sand viper.

A tree or shrub of the genus Ilex. The European species (Ilex Aguifolium) is best known, having glossy green leaves, with a spiny, waved edge, and bearing berries that turn red or yellow about Michaelmas.

A genus of decapod Crustacea, including the common lobsters. -- Hom"a*roid, a.

An umbelliferous plant of the genus Sison (S.Amomum); -- so called because used to cure a swelling called a hone.

Any bee of the genus Apis, which lives in communities and collects honey, esp. the common domesticated hive bee (Apis mellifica), the Italian bee (A. ligustica), and the Arabiab bee (A. fasciata). The two latter are by many entomologists considered only varieties of the common hive bee. Each swarm of bees consists of a…

A European plant of the genus Cerinthe, whose flowers are very attractive to bees. Loudon.

A European bird of the genus Upupa (U. epops), having a beautiful crest, which it can erect or depress at pleasure. Called also hoop, whoop. The name is also applied to several other species of the same genus and allied genera.

It often does great damage to hop vines. -- Hop hornbeam (Bot.), an American tree of the genus Ostrya (O.Virginica) the American ironwood; also, a European species (O. vulgaris). -- Hop moth (Zoöl.), a moth (Hypena humuli), which in the larval state is very injurious to hop vines. -- Hop picker, one who picks hops.…

A plant of the genus Marrubium (M. vulgare), which has a bitter taste, and is a weak tonic, used as a household remedy for colds, coughing, etc. [Written also hoarhound.] Fetid horehound, or Black horehound, a disagreeable plant resembling horehound (Ballota nigra). -- Water horehound, a species of the genus Lycopus,…

ride of mercury. -- Horn shell (Zoöl.), any long, sharp, spiral, gastropod shell, of the genus Cerithium, and allied genera. -- Horn silver (Min.), cerargyrite. -- Horn slate, a gray, siliceous stone. -- To haul in one's horns, to withdraw some arrogant pretension. [Colloq.] -- To raise, or lift, the horn (Script.)…

A tree of the genus Carpinus (C. Americana), having a smooth gray bark and a ridged trunk, the wood being white and very hard. It is common along the banks of streams in the United States, and is also called ironwood. The English hornbeam is C. Betulus. The American is called also blue beech and water beech. Hop hornbe…

A large nocturnal beetle of the genus Lucanus (as L. capreolus, and L. dama), having long, curved upper jaws, resembling a sickle. The grubs are found in the trunks of old trees.

michi. -- Horned snake (Zoöl.), the cerastes. -- Horned toad (Zoöl.), any lizard of the genus Phrynosoma, of which nine or ten species are known. These lizards have several hornlike spines on the head, and a broad, flat body, covered with spiny scales. They inhabit the dry, sandy plains from California to Mexico and…