What does the word apply mean?

Usage examples for apply

  1. Apply at the palace. – Oswald Bastable and Others by Edith Nesbit
  2. This is a difficult rule to apply however just it may seem to be. – Putnam's Handy Law Book for the Layman by Albert Sidney Bolles
  3. " Besides, I have no measure to apply to Malcolm," she went on, a little hurriedly. – The Marquis of Lossie by George MacDonald