Entry 3 senses · 2 variants Webster, 1913 Tom /täm/ · IPA /tɑm/ n. n. 01 n. The knave of trumps at gleek. 1. The knave of trumps at gleek.[Obs.] 02 n. A familiar contraction of Thomas, a proper name of a man. 1. A familiar contraction of Thomas, a proper name of a man. Also: Thomas 2. The male of certain animals; -- often used adjectively or in composition; as, tom turkey, tomcat, etc.