What does the word yesterday mean?

Usage examples for yesterday

  1. I did not, mamma, - I never thought of such a thing as possible, till yesterday. – Daisy in the Field by Elizabeth Wetherell
  2. Oh, if I had only known yesterday! – Betty's Bright Idea; Deacon Pitkin's Farm; and The First Christmas of New England by Harriet Beecher Stowe
  3. Lord Lovel came here yesterday, or perhaps I might have answered it then. – Lady Anna by Anthony Trollope