Fake feet in court, perhaps (11)
I believe the answer is:
counterfeit
'fake' is the definition.
(I know that fake can be written as counterfeit)
'feet in court perhaps' is the wordplay.
'perhaps' indicates an anagram.
'feet'+'in'+'court'='feetincourt'
'feetincourt' anagrammed gives 'COUNTERFEIT'.
(Other definitions for counterfeit that I've seen before include "Pirate" , "Pretended, sham" , "Sham, fake" , "Forgery" , "Phoney" .)