(euphemistic) Synonym of menstruation: the monthly period during which a fertile woman menstruates.

A period of time between two consecutive passages of the Moon through the same orbital node. The draconic month is shorter than the sidereal month, due to precession of the Moon's orbit. An average one lasts 27 days, 5 hours, 5 minutes, 35.8 seconds.

One person's working time for a month, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.

The period of duration from the first date of one month to the last date of the same month, which can thus vary from 28 to 31 days in length.

(colloquial, dated) The month in which female deer are fawning, when hunting is prohibited.

In the Jewish calendar or other lunisolar calendars, an extra month added to the usual 12 months because the solar year is slightly longer than 12 lunar months.

plural of time of the month

(Singapore, generally attributive) a one-month (or more) bonus paid to employees at the end of the financial year.

(astronomy, astrology) One twelfth of a Great Year, corresponding to one of the zodiacal ages (roughly 2000 years).

(astronomy, physics) A unit of length equal to the distance light travels in one month.