nDemicannon(Mil. Antiq) A kind of ordnance, carrying a ball weighing from thirty to thirty-six pounds.
Century Dictionary and Cyclopedia
ndemicannonA name given to one of the larger kinds of heavy gun, as used in the latter part of the sixteenth century. It is said to have been a piece having a bore of 6¾ inches, and throwing a shot weighing 33½ pounds. Some authors describe it as larger than this.