What does the word sap mean?

Usage examples for sap

  1. It was a day to chill one's spirit and sap one's courage. – Tom Slade with the Boys Over There by Percy K. Fitzhugh
  2. Sap, if you must, the foundations of somebody else's private paradise, but not ours. – Polly Oliver's Problem by Kate Douglas Smith Wiggin
  3. Nearer the south than bleak New England, the trees more full of sap, the sap sweeter than it flows anywhere on earth. – Watch Yourself Go By by Al. G. Field