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Webster 1913 Edition

Noun.

One who bleats; a sheep.

In cold, stiff soils the

bleaters

oft complain
Of gouty ails.

Dyer.

bleater ‎(plural bleaters)

Agent noun of bleat; one who bleats.
- 1956, C. S. Lewis, The Last Battle, Collins, 1998, Chapter 3,
  "Baby!" he hissed. "Silly little bleater! Go home to your mother and drink milk. […] "
- 2007, Virgil, Aeneid, translated by Frederick Ahl, Oxford University Press, Book 7, line 538, p. 175,
  Five flocks of bleaters he had, and five herds of cattle to shelter […]