arrowworm

[ ar-oh-wurm ]
/ ˈær oʊˌwɜrm /

noun

any small, translucent marine worm of the phylum (or class) Chaetognatha, having lateral and caudal fins.

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Also called glassworm.

Origin of arrowworm

First recorded in 1885–90; so called from a fancied resemblance to an arrow

Words nearby arrowworm

arrowhead, arrowroot, arrows, arrowsmith, arrowwood, arrowworm, arrowy, arroyo, arroyo grande, arroz con pollo, arru islands
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for arrowworm

arrowworm
/ (ˈærəʊˌwɜːm) /

noun

any small marine invertebrate of the genus Sagitta, having an elongated transparent body with fins and prehensile oral bristles: phylum Chaetognatha (chaetognaths)
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