variants:
or less commonly arrowworm \
ˈer-ō-ˌwərm 
, ˈer-ə- , ˈa-rō- , ˈa-rə-
\
, 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
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“Arrow worm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrow%20worm. Accessed 5 Jul. 2022.
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Time Traveler for arrow worm
The first known use of arrow worm was in 1859
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