Noun: arrowworm 'er-ow,wurm [N. Amer], 'a-row,wurm [Brit]
- 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
"The arrowworm darted through the water column, hunting smaller plankton";
- chaetognath
Derived forms: arrowworms
Type of: worm
Part of: Chaetognatha, phylum Chaetognatha
Encyclopedia: Arrowworm