Definify.com
Webster 1913 Edition
Arrowworm
Ar′row-wormˊ
,Noun.
(Zool.)
A peculiar transparent worm of the genus
Sagitta
, living at the surface of the sea. See Sagitta
. Definition 2025
arrowworm
arrowworm
See also: arrow worm
English

An arrowworm (Spadella cephaloptera)
Noun
arrowworm (plural arrowworms)
- (zoology) A transparent marine worm of the phylum Chaetognatha, found in plankton.