Definition of "barb"
barb1
/bɑː(ɹ)b/
noun
plural barbs
(figuratively) A hurtful or disparaging remark.
verb
third-person singular simple present barbs, present participle barbing, simple past and past participle barbed
barb2
/bɑː(ɹ)b/
barb3
/bɑː(ɹ)b/
noun
plural barbs
(informal, pharmacology) A barbiturate.