Quick definitions from WordNet (barb)

▸ noun:  one of the parallel filaments projecting from the main shaft of a feather
▸ noun:  a subsidiary point facing opposite from the main point that makes an arrowhead or spear hard to remove
▸ noun:  the pointed part of barbed wire
▸ noun:  an aggressive remark directed at a person like a missile and intended to have a telling effect
▸ verb:  provide with barbs ("Barbed wire")
▸ verb:  provide with barbs ("Barbed wire")
▸ name:  A female given name (rare: 1 in 16666 females; popularity rank in the U.S.: #1188)
▸ name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #13356)

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▸ Also see barb