Definition of tallow

• n. - The suet or fat of animals of the sheep and ox kinds, separated from membranous and fibrous matter by melting.
• n. - The fat of some other animals, or the fat obtained from certain plants, or from other sources, resembling the fat of animals of the sheep and ox kinds.
• v. t. - To grease or smear with tallow.
• v. t. - To cause to have a large quantity of tallow; to fatten; as, tallow sheep.