What is a fish; the dace. See Dace. Dart sac (Zoöl.), a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure called?

dart — (Zoöl.) A fish; the dace. See Dace. Dart sac (Zoöl.), a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure. (Webster's 1913.)

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