どばにむちうつ
駑馬に鞭打つ
to work hard; to keep one's nose to the grindstone; to whip a jaded horse
N3Expression
Expression, Godan verb (tsu ending)
to work hard•to keep one's nose to the grindstone•to whip a jaded horse
Expression, Godan verb (tsu ending)
to make someone do what is beyond their ability