Consequently made the referee rock (9)
I believe the answer is:
therefore
'consequently' is the definition.
(I've seen this before)
'the referee rock' is the wordplay.
'referee' becomes 'ref' (synonyms).
'rock' becomes 'ore' (ores are found in rocks).
'the'+'ref'+'ore'='THEREFORE'
'made' acts as a link.
(Other definitions for therefore that I've seen before include "has a triangular formation in maths?" , "Ergo" , "In consequence" , "It follows" , "Consequently - for that reason" .)