month

n. period of about 30 days or 4 weeks, 1/12 of a year, period of complete revolution of the moon around the earth (i.e. January, February, March, etc.)

The month is a unit of time, used with calendars, which is approximately as extensive as some natural period related to the motion of the Moon. The traditional concept arose with the cycle of moon phases; such months (lunations) are synodic months and last approximately 29.53 days. From excavated tally sticks, researchers have deduced that people counted days in relation to the Moon's phases as early as the Paleolithic age. Synodic months are still the basis of many calendars today.
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Noun
1. one of the twelve divisions of the calendar year; "he paid the bill last month"
(synonym) calendar month
(hypernym) time period, period of time, period
(hyponym) date
(part-meronym) week, calendar week
2. a time unit of 30 days; "he was given a month to pay the bill"
(hypernym) time unit, unit of time
(hyponym) lunar month, moon, lunation, synodic month
(part-holonym) year
(part-meronym) new moon, new phase of the moon

(n.)
One of the twelve portions into which the year is divided; the twelfth part of a year, corresponding nearly to the length of a synodic revolution of the moon, -- whence the name. In popular use, a period of four weeks is often called a month.
  

news; a month
  

the moon; month; smelling sweet