A respectable title addressed to a elderly man or gentlemen. 2.) The distinctive title given to a man of noble birth. Like that of a knight, lord or baronet: Sir Paul McCartney. 3.) Title of authority to Master from its Slave.
Female to Male transexual. The transition that involves taking male hormones, electing for top (breast removal) surgery, but doesn't always indicate bottom (penis attachment) surgery. Some Amy Johns may take testosterone and have top surgery, yet don't consider themselves transexual, or even male-identified.