Join newly-wed around midnight (6)
I believe the answer is:
bridge
'join' is the definition.
(bridging is a kind of joining)
'newly-wed around midnight' is the wordplay.
'newly wed' becomes 'bride' (I've seen this in other clues).
'around' means one lot of letters goes inside another.
'midnight' becomes 'g'.
'bride' going around 'g' is 'BRIDGE'.
(Other definitions for bridge that I've seen before include "Pontoon is one" , "pontoon, perhaps" , "English composer" , "Requirement for spectacles" , "Span of popular card game" .)