砲ほう銅どうほうどうMeanings1noungunmetalA bronze alloy historically used for cannons and ordnance; also referred to as 砲金 (ほうきん).See also: 砲金砲ほう銅どうは大たい砲ほうの材ざい料りょうとして使つかわれた。Gunmetal was used as a material for cannons.
