What does the word join mean?

Usage examples for join

  1. By the way, Mrs. Evan, won't you and Miss Lavinia join us at luncheon? – People of the Whirlpool by Mabel Osgood Wright
  2. Ought he to join her life with his? – Miss McDonald by Mary J. Holmes
  3. Your Grace does not join us? – The Young Duke by Benjamin Disraeli