Theft of a thousand dollars? (5,7)
I believe the answer is:
grand larceny
'theft' is the definition.
(I know that grand larceny is a type of theft)
'a thousand dollars?' is the wordplay.
'a thousand' becomes 'grand' (synonyms).
'dollars?' becomes 'larceny' (I can't justify this - if you can you should believe this answer much more).
'grand'+'larceny'='GRAND LARCENY'
'of' acts as a link.
Can you help me to learn more?
(Another definition for grand larceny that I've seen is " Time perhaps for this".)