Surg. [Fr., f. tire draw + fond lowest part.] (See quots.)
1857. Dunglison, Med. Lex., Tire-fond, a surgical instrument formerly used to elevate the piece of bone sawed off by the trephine.
1899. Syd. Soc. Lex., Tire-fond, an instrument for penetrating a cavity or tissue, transfixing and withdrawing foreign bodies, usually made in the form of a gimlet.
