month / mən[unvoicedth]/ • n. (also calendar month) each of the twelve named periods into which a year is divided: the first six months of 1992 | it was the end of the month. ∎ a period of time between the same dates in successive calendar months: the president's rule was extended for six more months from March 3. ∎ a period of 28 days or four weeks: the fourth month of pregnancy. ∎ a lunar month.PHRASES: a month of Sundays inf. a very long, seemingly endless period of time: no one will find them in a month of Sundays.
a month of Sundays a very long period of time.
month's mind in the Christian Church, the commemoration of a dead person by the celebration of a requiem mass or (later more widely) special prayers on the day one month after the date of the death or funeral.
See also labours of the month at labour.