Short for 月曜日 (getsuyōbi): Monday

moon / month / menstruation, menstrual cycle

(Kansai, historical) during the Edo period, a low rank of low-end prostitute

(archaic, possibly obsolete) crude, unrefined, hickish

(archaic, possibly obsolete) something or someone that/who is crude, unrefined, hickish

moon / month

sun / daytime, daylight / day

the daytime, during the day / a half day, half of a day

the eighth day of the month / eight days

the ninth day of the month / nine days