n. an aggressive remark directed at a person like a missile and intended to have a telling effect
n. the pointed part of barbed wire
n. a subsidiary point facing opposite from the main point that makes an arrowhead or spear hard to remove
n. （箭头、鱼钩等的）倒钩( barb的复数形式 ); 带刺的话; 毕露的锋芒; <植>钩状毛