nibble (v.) Look up nibble at Dictionary.com
"to bite gently," c.1500, perhaps from Low German nibbeln "to nibble, gnaw," related to Middle Low German nibbelen, Middle Dutch knibbelen "to gnaw," source of Dutch knibbelen "to cavail, squabble." Related: Nibbled; nibbling.
nibble (n.) Look up nibble at Dictionary.com
1650s, "act of nibbling," from nibble (v.). As "a small bite," from 1838.