nibble

(noun) a small byte. Synonyms: nybble.

(noun) gentle biting.

(verb) bite off very small pieces. Example: "She nibbled on her cracker."

(verb) bite gently. Example: "The woman tenderly nibbled at her baby's ear."

(verb) eat intermittently; take small bites of. Synonyms: pick, piece. Examples: "He pieced at the sandwich all morning." "She never eats a full meal--she just nibbles."