馬ば車しゃ馬うま

noun

cart-horse; workhorse

Refers literally to a horse that pulls a cart or carriage. Often used figuratively for a person who works tirelessly.

• 昔むかしは馬ば車しゃ馬うまが荷に物もつを運はこんでいた。

  In the past, cart-horses carried goods.

noun

wholeheartedly; with undivided attention

Used in the pattern 馬車馬のように to describe working single-mindedly and tirelessly, like a cart-horse.

• 彼かれは馬ば車しゃ馬うまのように働はたらいている。

  He works like a horse.