tubeworm

or tube worm

[toob-wurm, tyoob-]

Origin of tubeworm

First recorded in 1925–30; tube + worm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for tube worm

tube worm

noun
  1. any of various polychaete worms that construct and live in a tube made of sand, lime, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012