tube worm
noun
1- a marine bristle worm, especially a fan worm, which lives in a tube made from sand particles or in a calcareous tube that it secretes龙介虫; 缨鳃虫。
1.1
- Families Serpulidae and Sabellidae, phylum Polychaeta.龙介虫科和缨鳃虫科, 多毛纲门。
1.2
- a pogonophoran or vestimentiferan worm须腕动物; 被套动物。