（1）usually the moon
also the Moon
the round object that moves around the earth once every 27? days and shines at night by light reflected from the sun
the surface of the moon
a moon landing
the moon as it appears in the sky at a particular time
a crescent moon
Theres 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
a natural satellite that moves around a planet other than the earth
How many moons does Jupiter have?
ask, cry, etc. for the moon
(BrE, informal) 想做办不到的事情；想要得不到的东西
to ask for sth that is difficult or impossible to get or achieve
many moons ago
a very long time ago
over the moon
(informal, especially BrE) 欣喜若狂
extremely happy and excited
once in a blue moon
[V] (informal) 以屁股示人（在公共场所进行的恶作剧或侮辱）
to show your bottom to people in a public place as a joke or an insult