戦せん馬ばMeanings1nounwarhorse; military horserare termRare term for a horse used in battle or military contexts. Often replaced by 軍馬 (ぐんば) in modern usage.See also: 軍馬戦せん国ごく時じ代だい、戦せん馬ばは武ぶ士しにとって欠かかせない存そん在ざいだった。In the Warring States period, warhorses were indispensable to samurai.