Pass address hosting party for getting into bed with others (13)
I believe the answer is:
collaboration
'getting into bed with others' is the definition.
I can't judge whether this defines the answer.
'pass address hosting party' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'address' becomes 'oration' (oration is a kind of address).
'hosting' means one lot of letters goes inside another.
'party' becomes 'lab' (abbreviation for Labour).
'col'+'oration'='coloration'
'coloration' placed around 'lab' is 'COLLABORATION'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for collaboration that I've seen before include "Assistance" , "Joint work" , "Cooperation" , "Joint working" , "Cooperative work" .)