Noun

(en noun) The plural is occasionally seen as month (unchanged)

A period into which a year is divided, historically based on the phases of the moon. In the Gregorian calendar there are twelve months: January, February, March, April, May, June, July, August, September, October, November and December.

* {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)

, title=[http://www.economist.com/news/finance-and-economics/21582498-america-has-changed-way-it-measures-gdp-boundary-problems Boundary problems] , passage=Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month .}}

A period of 30 days, 31 days, or some alternation thereof.

*{{quote-book, year=1959, author=(Georgette Heyer), title=(The Unknown Ajax), chapter=1

, passage=Charles had not been employed above six months at Darracott Place, but he was not such a whopstraw as to make the least noise in the performance of his duties when his lordship was out of humour.}}

* {{quote-news, year=2011, date=September 29, author=Jon Smith, work=BBC Sport

, title=[http://news.bbc.co.uk/sport2/hi/football/15014632.stm Tottenham 3-1 Shamrock Rovers] , passage=With the north London derby to come at the weekend, Spurs boss Harry Redknapp opted to rest many of his key players, although he brought back Aaron Lennon after a month out through injury.}}

(obsolete, in the plural) A woman's period; menstrual discharge.

*, vol.I, New York, 2001, p.234:

Sckenkius hath two other instances of two melancholy and mad women, so caused from the suppression of their months .