LANCET (from Fr. lancelte, dim. of lance, lance), the name given to a surgical instrument, with a narrow two-edged blade and a lance-shaped point, used for opening abscesses, etc. The term is applied, in architecture, to a form of the pointed arch, and to a window of which the head is a lancet-arch.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)