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 Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
chaetognath \chaetognath\ 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. Syn: arrowworm.

Wiktionary Word definitions in Wiktionary
alt. Any of several marine worms of the phylum Chaetognatha. n. Any of several marine worms of the phylum Chaetognatha.

WordNet Word definitions in WordNet
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 [syn: arrowworm ]