Late night hour? (3)
I believe the answer is:
ten
'hour?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'late night' is the wordplay.
'TEN' is hidden in amongst the letters.
But, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for ten that I've seen before include "X-WORD" , "Very young" , "Dudley Moore/Bo Derek film" , "How many" , "Figure" .)