Former money court — vanished (7)
I believe the answer is:
extinct
'vanished' is the definition.
(thesaurus)
'former money court' is the wordplay.
'former' becomes 'ex'.
'money' becomes 'tin' (I've seen this before).
'court' becomes 'ct'.
'ex'+'tin'+'ct'='EXTINCT'
(Other definitions for extinct that I've seen before include "gone for ever" , "No longer extant" , "Like a dodo" , "Having died out, perished" , "(Of a volcano) dead" .)