What does the word sour mean?

Usage examples for sour

  1. What will my own pearl say to be dissolved in the sour vinegar of domestic life, and swallowed by a bear of a husband?" – The Love Affairs of Great Musicians, Volume 1 by Rupert Hughes
  2. You said you would take a sour ball. – In Her Own Right by John Reed Scott
  3. " Be quick in bringing it," she said, " lest it sour on the way." – Mother Stories by Maud Lindsay
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