Noah Webster
Trunnion-plate
TRUN'NION-PLATE, noun The trunnion plates are two plates in traveling carriages, mortars and howitzers, which cover the upper parts of the side-pieces, and go under the trunnions.
TRUN'NION-PLATE, noun The trunnion plates are two plates in traveling carriages, mortars and howitzers, which cover the upper parts of the side-pieces, and go under the trunnions.