Criticise the Spanish judges (5)
I believe the answer is:
panel
'judges' is the definition.
'criticise the spanish' is the wordplay.
'criticise' becomes 'pan' (informal term meaning to criticise heavily).
'the spanish' becomes 'el' ('the' in Spanish).
'pan'+'el'='PANEL'
(Other definitions for panel that I've seen before include "Bordered rectangular area" , "Discussion group" , "Group of people chosen to judge, discuss etc" , "Committee to judge a competition or list from which to appoint someone" , "Team selected, to judge a competition perhaps" .)