An arm and a leg, pelvis or body? (10)
I believe the answer is:
membership
'body?' is the definition.
(I know that membership is a type of body)
'an arm and a leg pelvis' is the wordplay.
'an arm and a leg' becomes 'members' (I can't justify this - if you can you should give a lot more credence to this answer).
'pelvis' becomes 'hip' (synonyms).
'members'+'hip'='MEMBERSHIP'
'or' is the link.
Can you help me to learn more?
(Other definitions for membership that I've seen before include "body" , "For everybody in organisation" , "What a joiner gets" .)