Definition of grease

• n. - Animal fat, as tallow or lard, especially when in a soft state; oily or unctuous matter of any kind.
• n. - An inflammation of a horse's heels, suspending the ordinary greasy secretion of the part, and producing dryness and scurfiness, followed by cracks, ulceration, and fungous excrescences.
• v. t. - To smear, anoint, or daub, with grease or fat; to lubricate; as, to grease the wheels of a wagon.
• v. t. - To bribe; to corrupt with presents.
• v. t. - To cheat or cozen; to overreach.
• v. t. - To affect (a horse) with grease, the disease.