What does the word bleat mean?

Usage examples for bleat

  1. Lord Ellerdine broke the silence with his plaintive bleat, repeating his former sentence: " Then how on earth could your friend know?" – A Butterfly on the Wheel by Cyril Arthur Edward Ranger Gull
  2. Then he opened his mouth to pour forth his soul in an agonising bleat. – My Tropic Isle by E J Banfield