三みっ日か三み晩ばん

expression

three days and three nights

Fixed expression used to emphasize a continuous duration of three full days and nights, often in contexts of effort, travel, or endurance.

• 三みっ日か三み晩ばん、ほとんど寝ねずに働はたらいた。

  I worked almost without sleep for three days and three nights.

• 三みっ日か三み晩ばんの雨あめで川かわが氾はん濫らんした。

  The river flooded after three days and three nights of rain.