The Collaborative International Dictionary
Knabbing
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.]
To seize with the teeth; to gnaw. ``Knabbing crusts.'' [Obs.]
--L'Estrange.To nab. See Nab, v. t. [Colloq.]
Wiktionary
knabbing
vb. (present participle of knab English)