What does the word walnut mean?

Usage examples for walnut

  1. The walnut does its best, and comes in a good second. – A Holiday in the Happy Valley with Pen and Pencil by T. R. Swinburne
  2. Don't you know that if the world and everything in it, counting yourself of course, was all made little enough to go into a walnut, you'd never find out the difference. – The Cuckoo Clock by Mrs. Molesworth
  3. I found the room where I cut my name on the walnut window frame, it's nearly rubbed out. – Watch Yourself Go By by Al. G. Field