What does the word X mean?

Usage examples for X

  1. Mrs. X, as he called her, who lives in a palace not a thousand miles, he said, from Piazza degli Anti- nory, and who had given Mr. B. reasons for not liking her, was seen by him, in a suspiciously simple dress, going suspiciously on foot, in a little suspiciously out of the way street, at a considerable distance from Piazza degli Anti- nory. – Aurora the Magnificent by Gertrude Hall
  2. All Saint X knew what it meant for old Skeffington to " fool 'em again." – The Second Generation by David Graham Phillips
  3. I'll go to Saint X. I'm just about strong enough to stand the trip- and have Schulze come out to Point Helen this evening." – The Second Generation by David Graham Phillips