馬勒 is read as ばろく (baroku) and means bridle.
ばろく
baroku
うま
horse
ばか
Mactra chinensis (species of trough shell)
ばしゅ
owner of a horse (esp. racehorse)
ばからしい
absurd
ばしゃ
coach (horse-drawn)
ばりき
horse-drawn cart
ばじゅつ
horsemanship
ばば
riding ground
ばけん
betting ticket
ばしん
horse's length
ばじょう
(on) horseback
めず
horse-headed demon (in hell)