Requested opening of bar in shopping centre for celebration (6,4)
I believe the answer is:
masked ball
'celebration' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'requested opening of bar in shopping centre' is the wordplay.
'requested' becomes 'asked' ('ask' can be a synonym of 'request').
'opening of' says to take the initial letters.
'in' is an insertion indicator.
'shopping centre' becomes 'mall' (a mall is a large shopping complex).
The initial letter of 'bar' is 'b'.
'asked'+'b'='askedb'
'askedb' inserted inside 'mall' is 'MASKED BALL'.
'for' is the link.
Can you help me to learn more?
(Other definitions for masked ball that I've seen before include "social event" , "special sort of party" .)