month Meaning, Definition & Usage

  1. noun one of the twelve divisions of the calendar year
    calendar month.
    • he paid the bill last month
  2. noun a time unit of approximately 30 days
    • he was given a month to pay the bill

WordNet

Month noun
Etymology
OE. month, moneth, AS. mon, mona; akin to mona moon, and to D. maand month, G. monat, OHG. manod, Icel. manur, manar, Goth. menos. *272. See Moon.
Definitions
  1. 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. ✍ In the common law, a month is a lunar month, or twenty-eight days, unless otherwise expressed. Blackstone. In the United States the rule of the common law is generally cahanged, and a month is declared to mean a calendar month. Cooley's Blackstone.

Webster 1913