shot, shaft, slam, dig, barb, jibe, gibe -- (an aggressive remark directed at a person like a missile and intended to have a telling effect; "his parting shot was `drop dead'"; "she threw shafts of sarcasm"; "she takes a dig at me every chance she gets")
barb -- (the pointed part of barbed wire)
barb -- (a subsidiary point facing opposite from the main point that makes an arrowhead or spear hard to remove)
barb -- (one of the parallel filaments projecting from the main shaft of a feather)