D defs.my
Entry 1 sense Webster, 1913

Spontoon

/(spŏn*to͞on")/ · Spon·toon · IPA
01 n. A kind of half-pike, or halberd, formerly borne by inferior officers of the British infantry, and used in giving signals to the soldiers.
  1. 1.
    A kind of half-pike, or halberd, formerly borne by inferior officers of the British infantry, and used in giving signals to the soldiers.(Mil.)