Lancet

(Ian’ -set) [dim. of lance a, a lance]. A knife having a double-edged, lance-shaped blade for incising tumors, absce es, etc. L., Gum, a small lancet in which the cutting portion has a convex edge and is at right angles to the shaft; it is used for cutting the gums. L., Spring, one in which the blade is thrust out by means of a spring, controlled by a trigger. L., Thumb, one with a double edged, broad blade. 353