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See also: Moon and mo-on


The Moon (waning crescent)
The Moon (full)


From Middle English mone, from Old English mōna(moon), from Proto-Germanic *mēnô(moon), from Proto-Indo-European *mḗh₁n̥s(moon, month), probably from *meh₁-(to measure). Cognate with Scots mone, mune, muin(moon), North Frisian muun(moon), West Frisian moanne(moon), Dutch maan(moon), German Mond(moon), Swedish måne(moon), Icelandic máni(moon), Latin mēnsis(month). See also month, a related term within Indo-European.



moon (plural moons)

  1. (with "the") Earth's only natural satellite.
  2. Any natural satellite of a planet.
    the moons of Jupiter
  3. (literary) A month, particularly a lunar month.
    • 1603, William Shakespeare, Othello:
      For since these arms of mine had seven years' pith,
      Till now some nine moons wasted, they have used
      Their dearest action in the tented field…
    • 1737, John Brickell, The natural history of North-Carolina, page 308-309:
      They number their age by Moons or Winters, and say a Woman or a Man is so many Moons old, and so they do with all memorable Actions in life, accounting it to be so many Moons or Winters since such or such a thing happened. Note: in earlier modern English, many nouns were capitalized, similar to present day German.
    • 1822, Thomas Love Peacock, Maid Marian, page 238:
      Many moons had waxed and waned when on the afternoon of a lovely summer day a lusty broad-boned knight was riding through the forest of Sherwood.
  4. A crescent-like outwork in a fortification.


Derived terms[edit]


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.


moon (third-person singular simple present moons, present participle mooning, simple past and past participle mooned)

  1. (transitive, colloquial) To display one's buttocks to, typically as a jest, insult, or protest.
  2. (intransitive, US, colloquial) (usually followed by over or after) To fuss over something adoringly; to be infatuated with someone.
    Sarah mooned over Sam's photograph for months.
    You've been mooning after her forever, why not just ask her out?
    • 2017 January 12, Jesse Hassenger, “A literal monster truck is far from the stupidest thing about Monster Trucks”, in The Onion AV Club[1]:
      On some level, the filmmakers behind Monster Trucks must have recognized the ill fit of Till playing a teenager, because they cast Jane Levy, a 27-year-old who can pass for younger but not a decade younger, as Meredith, a nerdy classmate of Tripp’s who moons over him as she insists on making an appointment to tutor him in biology.
  3. To spend time idly, absent-mindedly.
    • 1898, Joseph Conrad, Youth
      We were only three on board. The poor old skipper mooned in the cabin.
  4. (transitive) To expose to the rays of the Moon.
    • Holland
      If they have it to be exceeding white indeed, they seethe it yet once more, after it hath been thus sunned and mooned.


Related terms[edit]

See also[edit]

External links[edit]

Wikipedia has a disambiguation page on moon




Contraction of (dialectal form of minä - I) + oon(dialectal form of olen - am).


  • Hyphenation: moon
  • IPA(key): /ˈmoːn/



  1. (dialectal, southern Ostrobothnia) I'm



From Old Irish mún.


moon m (genitive singular mooin, no plural)

  1. urine


Manx mutation
Radical Lenition Eclipsis
moon voon unchanged
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.

North Frisian[edit]


From Old Frisian man, from Proto-Germanic *mann-, probably ultimately from Proto-Indo-European *mon-.


moon m

  1. (Mooring) man