Newly-wed hosting good game (6)
I believe the answer is:
bridge
'game' is the definition.
(card game)
'newly-wed hosting good' is the wordplay.
'newly wed' becomes 'bride' (I've seen this in other clues).
'hosting' indicates putting letters inside.
'good' becomes 'g' (abbreviation).
'bride' placed around 'g' is 'BRIDGE'.
(Other definitions for bridge that I've seen before include "pontoon, perhaps" , "Structure spanning a divide" , "Spanning structure to allow passage" , "may involve suspension" , "part for violin" .)