The Oxford Thesaurus An A-Z Dictionary of Synonyms - dab v.

1) daub, pat, tap, tamp, touch: Dab a little more paint into the crevices. --n. 2) touch, drop, trace, bit, mite, hint, suggestion, pinch, dash, spot, tinge, Colloq dollop, smidgen or smidgin: Add just a dab of mustard to the sauce. 3) daub, poke, pat, tap, touch: Wipe it away with a dab of a damp cloth.