Any of various annelid worms of the class Polychaeta, including mostly marine worms such as the lugworm, and characterized by fleshy paired appendages tipped with bristles on each body segment.

• 多毛目环节动物多毛目中的任一种环节动物蠕虫，主要包括海生蠕虫，如海蚯蚓，特征是其身体的每一节上都长有尖端带刚毛的、多肉的成对附属物