the GNU version of the Collaborative International Dictionary of English
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.
The Century Dictionary and Cyclopedia
n. A kind of halberd or partizan formerly serving as the distinguishing arm for certain officers of the British infantry. Compare half-pike. Also called demi-pike.
Word Usage
"A spontoon was a kind of half-pike, a military weapon carried by officers of infantry and used as a medium for signalling orders to the regiment."