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muzzle loading 
The muzzle characterized all nonportable firearms such as cannon and mortar.
astragal 
The moldings used to join the various sections of the barrel together.
trunnion 
Cylindrical piece used to rest the barrel on the carriage and to pivot it when setting up the shot.
wheel 
cheek 
The sides of the muzzle loading carriage.
wedge 
Device used to adjust and secure the barrel in a specific firing position.
muzzle 
Opening through which the projectile left the barrel.
chase 
Part between the muzzle and the second reinforce.
second reinforce 
Part between the first reinforce and the chase and next to the trunnions.
first reinforce 
The thickest part of the barrel where the powder charge exploded.
vent 
Opening in the barrel for igniting the powder charge.
base ring 
Molding around the back end of the barrel.
carriage 
Base of the barrel that was used to aim and move the cannon.
barrel 
Cylindrical tube used to fire projectiles.