What does the word score mean?

Usage examples for score

  1. Scarcely had he gone a score of steps before he saw a star reflected in a spring at his feet. – Out of the Triangle by Mary E. Bamford
  2. Who will score, then? – Left Tackle Thayer by Ralph Henry Barbour
  3. The score was fifteen- nothing. – The Loom of Youth by Alec Waugh