From Longman Dictionary of Contemporary Englishnip something ↔ off phrasal verbDLGREMOVEto remove a small part of something, especially a plant, by pressing it tightly between your finger and thumb She nipped off a dead flower. → nip→ See Verb table
Examples from the Corpus
nip off• He drew on it, then took it out of his mouth and nipped the end off before dropping it on the floor. 