Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A transparent marine worm of the phylum Chaetognatha, found in plankton.

from the GNU version of the Collaborative International Dictionary of English

  • n. A peculiar transparent worm of the genus Sagitta, living at the surface of the sea. See Sagitta.

from The Century Dictionary and Cyclopedia

  • n. An animal of the genus Sagitta (which see).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth

Etymologies

arrow +‎ worm (Wiktionary)

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