back labor

uncountable usually

Intense pain in one's back while in labor (giving birth).

Japanese Meaning

陣痛時における背中の激しい痛み

She experienced severe back labor during the night, which made each contraction unbearable.

彼女は夜中に出産時の激しい背中の痛みに見舞われ、陣痛が来るたびに耐えられないほどでした。

Sense（1）

Intense pain in one's back while in labor (giving birth).

back labors

（ plural ）