Lanceolate

(Ian' -se-o-lat). I biology, each shaped towards end.like a lance-head; thin and tapering Lancet (Ian' -set). A two edged surgical instrument for incising tumors, etc. L.. Gum, a small instrument in which the cutting portion has a convex edge and is at right-angles to the shaft L., Spring, one in which the blade is thrust out by means of a spring, which is controlled by a trigger. L., Thumb, one with a double-edged, broad blade. Lanciform (Ian' -sif-orm).