name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #7508)
noun: Initialism of terms of service. [(law) The terms, conditions, or restrictions under which a person, commonly called an end user, may or may not utilize the aspects of a particular service.]
noun: Initialism of thoracic outlet syndrome. [(medicine) A condition involving compression of the nerves, arteries or veins in the passageway from the lower neck to the armpit.]
noun: (fandom slang, retronym) Initialism of the old or original series