Judges drunk by about 1:50 in Reading (9)
I believe the answer is:
rehearsal
'reading' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'judges drunk by about 150' is the wordplay.
'judges' becomes 'hears' (as in to hear a court case).
'drunk by' means one lot of letters goes inside another.
'about' shows that the letters should be reversed in order.
'l50' becomes 'laer' (I am not sure about this - if you are sure you should believe this answer much more).
'laer' reversed gives 'real'.
'hears' placed into 'real' is 'REHEARSAL'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for rehearsal that I've seen before include "Dummy run" , "Practice session in preparation for public performance" , "show trial" , "Drill" , "Practice - run-through" .)