Personal assistant gets court agreement (4)
I believe the answer is:
pact
'agreement' is the definition.
(pact is a kind of agreement)
'personal assistant gets court' is the wordplay.
'personal assistant' becomes 'pa'.
'gets' says to put letters next to each other.
'court' becomes 'ct'.
'pa'+'ct'='PACT'
(Other definitions for pact that I've seen before include "Agreement, bargain" , "Alliance" , "Settlement" , "Written agreement between two states" , "Agreement, covenant" .)