Hog (hŏg), n. [Prob. akin to E. hack to cut, and meaning orig., a castrated boar; cf. also W. hwch swine, sow, Armor. houc'h, hoc'h. Cf. Haggis, Hogget, and Hoggerel.] 1. (Zoöl.) 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.
☞ The domestic hogs of Siam, China, and parts of Southern Europe, are thought to have been derived from Sus Indicus.
2. A mean, filthy, or gluttonous fellow.
3. A young sheep that has not been shorn.
4. (Naut.) A rough, flat scrubbing broom for scrubbing a ship's bottom under water. Totten.
5. (Paper Manuf.) A device for mixing and stirring the pulp of which paper is made.
Bush hog, Ground hog, etc.. See under Bush, Ground, etc. — Hog caterpillar(Zoöl.), the larva of the green grapevine sphinx; — so called because the head and first three segments are much smaller than those behind them, so as to make a resemblance to a hog's snout. See Hawk moth. — Hog cholera, an epidemic contagious fever of swine, attended by liquid, fetid, diarrhea, and by the appearance on the skin and mucous membrane of spots and patches of a scarlet, purple, or black color. It is fatal in from one to six days, or ends in a slow, uncertain recovery. Law (Farmer's Veter. Adviser.) — Hog deer(Zoöl.), the axis deer. — Hog gum(Bot.), West Indian tree (Symphonia globulifera), yielding an aromatic gum. — Hog of wool, the trade name for the fleece or wool of sheep of the second year. — Hog peanut(Bot.), a kind of earth pea. — Hog plum(Bot.), a tropical tree, of the genus Spondias (S. lutea), with fruit somewhat resembling plums, but chiefly eaten by hogs. It is found in the West Indies. — Hog's bean(Bot.), the plant henbane. — Hog's bread.(Bot.) See Sow bread. — Hog's fennel. (Bot.) See under Fennel. — Mexican hog(Zoöl.), the peccary. — Water hog. (Zoöl.) See Capybara.