馬ば勒ろくMeanings1nounbridleA rare, technical term for a horse's bridle. In modern Japanese, 手綱 (たづな) is the usual word for reins or bridle.古ふるい文ぶん献けんでは「馬ば勒ろく」という語ごが馬ば具ぐを指さすことがある。In old documents, the word 馬勒 sometimes refers to horse tack.