spigot mortar

spigot mortar

[′spik·ət ‚mȯrd·ər]
(ordnance)
A mortar which propels a warhead larger than the bore of the mortar by means of a closed tube (spigot) attached to the warhead and extending into the mortar; the force of the propellant within the mortar acts upon the tube, thus propelling the warhead toward the target.
References in periodicals archive ?
The discovery was made by groundsmen at Cilsanws Golf Club, near Cefn Coed, on Thursday evening, and police have revealed they believe it was a Spigot mortar - a weapon used to destroy tanks.
They were identified as concrete-filled 29mm Spigot mortar shells used for practice.
While searching for lost valuables, coins and buried treasure, Tristan, aged ten, of Kidderminster, homed on to an unexploded 2ft long spigot mortar bomb weighing about 15lb.