a female given name

"Mon-Mon-Tue-Wed-Thu-Fri-Fri" (i.e. working all seven days of the week, including weekends.)

An Imperial Japan-era military song.

April Fools' Day

a female given name

(mahjong) completing a winning hand by drawing the final tile before reaching the dead wall

(mahjong) completing a winning hand by drawing the final tile before reaching the dead wall, worth 1 翻 (han, “double”)

waiting impatiently / time dragging on

pertussis; whooping cough

五日 (itsuka, go-nichi, “fifth (5th) day”) / 十日 (tōka, jū-nichi, “tenth (10th) day”) / 十五日 (jūgo-nichi, “fifteenth (15th) day”) / 二十日 (hatsuka, nijū-nichi, “twentieth (20th) day”)