Dance circle lost member (4)
I believe the answer is:
limb
'member' is the definition.
(member can mean a limb)
'dance circle lost' is the wordplay.
'dance' becomes 'limbo' (type of dance).
'circle' becomes 'O' (O is a circle).
'lost' is a deletion indicator.
'limbo' with 'o' taken out is 'LIMB'.
(Other definitions for limb that I've seen before include "arm, perhaps" , "Eg, arm, leg" , "as part of plane, say" , "Arm, leg or wing" , "Part of body or branch of tree" .)