Noun chaetognath has 1 sense
  1. arrowworm, chaetognath - 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
    --1 is a kind of worm
    --1 is a member of Chaetognatha, phylum Chaetognatha
    --1 has particulars: sagitta
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