Definition of: tallow

(tal′ō) noun
1. A mixture of the harder animal fats, as of beef or mutton, refined for use in candles, soaps, oleomargarine, etc.
2. A vegetable fat obtained from the bayberry.
—v.t.
1. To smear with tallow.
2. To fatten. [ME talgh, prob. <MLG talg, talch]
—tal′·low·y adjective