- 1the moon, the Moon [singular] the round object that moves around the earth once every 27½ days and shines at night by light reflected from the sun the surface of the moon a moon landing
- 2[singular] the moon as it appears in the sky at a particular time a crescent moon There's no moon tonight (= no moon can be seen). By the light of the moon I could just make out shapes and outlines. see also full moon, half-moon, new moon
- 3[countable] a natural satellite that moves around a planet other than the earth How many moons does Jupiter have? Idioms
nounjump to other results
to ask for something that is difficult or impossible to get or achieve Wanting a decent job and a home is hardly asking for the moon.
ask, cry, etc. for the moon (informal)jump to other results
a very long time ago All that happened many moons ago.
many moons ago (literary)jump to other results
once in a blue moon (informal)jump to other results
to make promises that will be impossible to keep Politicians promise the earth before an election, but things are different afterward.
promise (somebody) the earth/moon/world (informal)jump to other results