'Spontoon' definitions:

Definition of 'Spontoon'

From: GCIDE

Spontoon \Spon*toon"\ (sp[o^]n*t[=oo]n"), n. [F. sponton, esponton, It. spontone, spuntone.] (Mil.) A kind of half-pike, or halberd, formerly borne by inferior officers of the British infantry, and used in giving signals to the soldiers. [1913 Webster]