The definition of a month is any of the twelve parts of the calendar year.(noun)
An example of a month is January.
See month in Webster's New World College Dictionary
Origin: ME < OE monath, akin to Ger monat, ON manuthr < Gmc *menōth- < IE *mēnōt, month, moon, var. of mēn: see moon
See month in American Heritage Dictionary 4
Origin: Middle English moneth
Origin: , from Old English mōnath; see mē-2 in Indo-European roots. Usage Note: The singular month, preceded by a number and a hyphen, is used as a compound attributive: a three-month vacation. The plural possessive form without a hyphen is also possible: a three months' vacation.
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