馬うま毛げMeanings1nounhorsehairRefers to hair from a horse, especially from the mane and tail, used for brushes, bows of string instruments, and other items.バイオリンの弓ゆみには馬うま毛げが使つかわれている。Horsehair is used for violin bows.このブラシは馬うま毛げでできている。This brush is made of horsehair.