Extra member with the last word? (3,3)
I believe the answer is:
leg bye
'extra' is the definition.
(cricket term)
'member with the last word?' is the wordplay.
'member' becomes 'leg' (member can mean a limb).
'with' says to put letters next to each other.
'the last word?' becomes 'bye' (word said before parting).
'leg'+'bye'='LEG-BYE'
(Other definitions for leg bye that I've seen before include "cricketer scoring off his pad" , "Extra run (cricket)" , "Type of run (cricket)" , "Extra 24 across" .)