Definition of "month"
- noun
- 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. 
- A period of 30 days, 31 days, or some alternation thereof. 
- A woman's period; menstrual discharge. 
- Sources