What is "lancet architecture"

Lancet \Lan"cet\, n. [F. lancette, dim. of lance lance. See Lance.]

1. A surgical knife-like 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.

   Lancet arch (Arch.), a pointed arch, of which the width, or span, is narrow compared with the height.

   Lancet architecture, a name given to a style of architecture, in which lancet arches are common; -- peculiar to England and 13th century.