What does "hog" mean?

Additional senses

1. 2.A young sheep that has not been shorn. [Eng.]
2. 3.(Naut.) A rough, flat scrubbing broom for scrubbing a ship's bottom under water. Totten.
3. 4.(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.
4. 5.To cut short like bristles; as, to hog the mane of a horse. Smart.
5. 6.(Naut.) To scrub with a hog, or scrubbing broom.
6. 7.To become bent upward in the middle, like a hog's back; -- said of a ship broken or strained so as to have this form.