sauterelle

Noun

 * 1) An instrument used by masons and others to trace and form angles.
 * 2) A type of crossbow for throwing hand grenades or small bombs into enemy trenches, used by the French and British soldiers on the Western Front during World War I.

Etymology
From.

Noun

 * 1) grasshopper
 * 2)   instrument to trace and form angles
 * 1)   instrument to trace and form angles