the round object that you can see shining in the sky at night, and that moves around the Earth every 28 days:
The Americans landed on the moon in 1969.
the craters on the surface of the moon
2 [countable usually singular]HACF
the appearance or shape of the moon at a particular time: ➔ full moon, half moon, new moon
a clear night with a bright moon
a thin crescent moon
It was raining and there was no moon (=the moon could not be seen).
a round object that moves around a planet other than Earth:
the moons of Saturn
4 also cry for the moon British English informal
to ask for something that is difficult or impossible to obtain:
There's no point in crying for the moon.
5 British English informal
She's over the moon about her new job.
a long time ago:
It all happened many moons ago.
➔ once in a blue moonat once1 (15)
; ➔ promise somebody the moonat promise1 (3)WORD FOCUS: space
vehicles used in space: spaceship, spacecraft, rocket, (space) shuttle, probe, satellite, space station
someone who travels in space: astronaut, cosmonaut Russian
parts of a rocket's journey: countdown, launch, blast-off/take-off/lift-off, leaving the earth's atmosphere, going into orbit, re-entering the earth's atmosphere, splashdown/touchdown
places and things in space: planet, moon, star, sun, satellite, solar system, constellation, galaxy, universe, the cosmos, black hole, quasar, comet, meteor, asteroid
the study of space: astronomyspace
➔ See also space