Fleam \Fleam\, n. [F. flamme, OF. flieme, fr. LL. flevotomum, phlebotomum; cf. D. vlijm. See {Phlebotomy}.] (Surg. & Far.) A sharp instrument used for opening veins, lancing gums, etc.; a kind of lancet. {Fleam tooth}, a tooth of a saw shaped like an isosceles triangle; a peg tooth. --Knight.