Nibble according to Wiktionary

Etymology 1[edit]
Perhaps from Middle Low German nibbelen (“to gnaw”), akin to modern Low German nibbeln (“to gnaw”) and Dutch nibbelen (“to nibble”).

Noun[edit]
1.A small, quick bite taken with the front teeth.
2.(in the plural, nibbles) Small snacks such as crisps/potato chips or nuts, often eaten to accompany drinks.

Verb[edit]
1.(transitive) To eat with small, quick bites.
2.(transitive) To bite lightly.