nibble

To bite at gently and repeatedly.

To eat with small, quick bites or in small morsels.

To wear away or diminish bit by bit.

To take small or hesitant bites.

A very small quantity, especially of food; a morsel.

The act or an instance of nibbling.

The act of nibbling; a little bite; also, a small morsel or bit.

To eat by biting or gnawing off small bits; gnaw.

To bite very slightly or gently; bite off small pieces of.

To catch; nab.