Any of various small, slender Marine worms of the phylum Chaetognatha having a narrow, almost transparent body and sickle-shaped bristles on each side of the mouth.
一种毛颚动物门中的，细小的海生虫，有细长几乎透明的身体，嘴的两侧有镰刀形的毛须。
2
Any of numerous relatively small elongated soft-bodied animals especially of the phyla annelida and chaetognatha and nematoda and nemertea and platyhelminthes; also many insect larvae.