noon /nuːn/ BrE AmE noun [uncountable]
[ Language: Old English ; Origin: non 'ninth hour from sunrise' , from Latin nonus 'ninth' ]
12 o'clock in the daytime SYN midday
at/before/by noon
We left home at noon.
He rarely gets up before noon.
We met at 12 noon.
⇨ morning, noon, and night at ↑ morning 1 (5)