lancet Meaning, Definition & Usage

  1. noun an acutely pointed Gothic arch, like a lance
    lancet arch.
  2. noun a surgical knife with a pointed double-edged blade; used for punctures and small incisions
    lance.

WordNet

Lan"cet noun
Etymology
F. lancette, dim. of lance lance. See Lance.
Definitions
  1. A surgical instrument of various forms, commonly sharp-pointed and two-edged, used in venesection, and in opening abscesses, etc.
  2. (Metal.) An iron bar used for tapping a melting furnace. Knight.

Webster 1913