protuberance

n. 节疤,突出,凸出

A knob, knot, protuberance, or swelling.

节，结，瘤球状物、结、节疤或肿瘤

A rounded protuberance formed by the bones in a joint.

（屈指时）指节膨出部关节中由骨头形成的圆形突出物