Nibble
NIBBLE, verb transitive [from nib.]
1. To bite by little at a time; to eat slowly or in small bits. So sheep are said to nibble the grass.
2. To bite, as a fish does the bait; to carp at; just to catch by biting.
NIBBLE, verb intransitive
1. To bite at; as, fishes nibble at the bait.
2. To carp at; to find fault; to censure little faults.
Instead of returning a full answer to my book, he manifestly nibbles at a single passage.
NIBBLE, noun A little bite, or seizing to bite.