arrow worm

noun
variants: or less commonly arrowworm \ ˈer-​ō-​ˌwərm How to pronounce arrow worm (audio) , ˈer-​ə-​ , ˈa-​rō-​ , ˈa-​rə-​ \

Definition of arrow worm

: any of a phylum (Chaetognatha) of small planktonic wormlike marine organisms having curved bristles on either side of the head for seizing prey

First Known Use of arrow worm

1859, in the meaning defined above

Learn More About arrow worm

Time Traveler for arrow worm

Time Traveler

The first known use of arrow worm was in 1859

See more words from the same year

Dictionary Entries Near arrow worm

arrowwood

arrow worm

arrowy

See More Nearby Entries 

Statistics for arrow worm

Cite this Entry

“Arrow worm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrow%20worm. Accessed 5 Jul. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!