tallow - tal·low (tăl′ō)

n.
1. Hard fat obtained from parts of the bodies of cattle or sheep, used in foodstuffs or to make leather dressing, soap, and lubricants, and formerly used to make candles.
2. (Chemistry) a fatty substance consisting of a mixture of glycerides, including stearic, palmitic, and oleic acids and extracted chiefly from the suet of sheep and cattle: used for making soap, candles, food, etc
3. Any of various similar fats, such as those obtained from plants.
tr.v.
1. To smear or cover with tallow.
2. To fatten (animals) in order to obtain tallow. https://www.thefreedictionary.com/tallow PS. What are the main differences between tallow and lard? Tallow comes from beef and has a rich, savory flavor, perfect for frying and roasting, while lard, derived from pig fat, has a mild, neutral taste, making it ideal for baking and creating flaky pastries.