Knab \Knab\ (n[a^]b), v. t. [imp. & p. p. {Knabbed} (n[a^]bd); p. pr. & vb. n. {Knabbing}.] [See {Nab}, v. t., and cf. {Knap}, v. t.] 1. To seize with the teeth; to gnaw. "Knabbing crusts." [Obs.] --L'Estrange. [1913 Webster] 2. To nab. See {Nab}, v. t. [Colloq.] [1913 Webster]