What does the word crunch mean?

Usage examples for crunch

  1. They came at last, with a shuffle of feet and click of bayonets, the word was passed, the relief fell out, and away they went, crunch, crunch, across the gravel. – The King in Yellow by Robert W. Chambers
  2. Crunch, crunch, crunch, went the horses' feet, jingle jangle, jingle jangle, went the bells until they were almost up to the white house at the end of the lane. – Black-Eyed Susan by Ethel Calvert Phillips