Grease

n. [Fr. graisse, Sp. grasa, Pg. graxa, It. grasso, grease for wheels, and a distemper in a horse when his fat is melted by excessive action; from Fr. & Pr. gras, Sp. graso, It. grasso, Pg. graxo, fat, greasy, from Lat. crassus, L. Lat. grassus, thick, fat, gross. Gael. creis is from Eng. grease.]

1Sense 1. Animal fat in a soft state; oily or unctuous matter of any kind, as tallow, lard; especially, the fatty matter of land animals, as distinguished from the oily matter of marine animals.

2Sense 2. (Far.) An inflammation of the heels of a horse, which suspends the ordinary greasy secretion of the part, and which produces dryness and scurfiness, followed by cracks, ulceration, and fungous excrescences.