Nibble

Webster's Dictionary of the English Language

·noun A small or cautious bite.

II. Nibble ·vt To bite by little at a time; to seize gently with the mouth; to eat slowly or in small bits.

III. Nibble ·vt To bite upon something gently or cautiously; to eat a little of a thing, as by taking small bits cautiously; as, fishes nibble at the bait.