What does the word deal mean?

Usage examples for deal

  1. You could do a great deal if you would help me. – The Turnstile by A. E. W. (Alfred Edward Woodley) Mason
  2. I said nothing, but I thought a good deal. – Lord John in New York by C. N. Williamson A. M. Williamson
  3. Mrs. Pell had a great deal of engraving done. – The Diamond Pin by Carolyn Wells