Dropping preliminaries, sleep with newly-wed in storage space (6,4)
'dropping preliminaries sleep with newly-wed' is the definition.
I can't tell whether this defines the answer.
'storage space' is the wordplay.
'storage' becomes 'lumber' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'space' becomes 'room' (room is a kind of space).
'lumber'+'room'='LUMBER-ROOM'
'in' acts as a link.
Can you help me to learn more?
(Another definition for lumber room that I've seen is " store".)
'space' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Perhaps there's an association between them I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for lumber that I've seen before include "Walk heavily carrying wood?" , "Move clumsily - Jack's wood?" , "Move awkwardly; useless things" , "Unwanted, stored goods" , "Stored furniture; (US) timber" .)