What does the word overflow mean?

Usage examples for overflow

  1. And the young girl suddenly began to sing, loudly, as if in an overflow of spirits; and Peer guessed that it was for her mother's sake. – The Great Hunger by Johan Bojer
  2. It must be admitted, too, that it was a piece of imprudence on the part of the lads, who would have been wiser had they quietly waited where they were until the overflow exhausted itself. – The Hunters of the Ozark by Edward S. Ellis
  3. It needs the overflow of heart To give the lips full speech. – Poems with Power to Strengthen the Soul by Various