Idiot frames thousand questions (4)
I believe the answer is:
asks
'questions' is the definition.
(I've seen this before)
'idiot frames thousand' is the wordplay.
'idiot' becomes 'ass' (I've seen this before).
'frames' means one lot of letters goes inside another.
'thousand' becomes 'k' ('K' can be a synonym of 'thousand').
'ass' going around 'k' is 'ASKS'.
(Other definitions for asks that I've seen before include "Demands (something of someone)" , "Begs" , "Enquires; requests" , "is curious" , "Questions" .)