acorn worm

or a·corn·worm


noun

any of several burrowing, often brilliantly colored hemichordates of the class Enteropneusta, usually found in intertidal sand and mud, having an acorn-shaped proboscis and collar.

QUIZZES

ELEMENTARY SCHOOL PUNCTUATION QUIZ

Punctuation marks help make writing easy to read and understand. Some of the most important ones are the period (.), comma (,), question mark (?), and exclamation point (!). How well do you know how to use them? Find out in this quiz!
Question 1 of 10
Which punctuation mark is best for this sentence? "Can I watch a movie __"

Origin of acorn worm

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for acorn worm

acorn worm

noun

any of various small burrowing marine animals of the genus Balanoglossus and related genera, having an elongated wormlike body with an acorn-shaped eversible proboscis at the head end: subphylum Hemichordata (hemichordates)
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