Lightly touch base down here for the night (10)
I believe the answer is:
featherbed
'down here for the night' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'lightly touch base' is the wordplay.
'lightly touch' becomes 'feather' (I can't justify this - if you can you should give a lot more credence to this answer).
'base' becomes 'bed' (bed is a kind of base).
'feather'+'bed'='FEATHERBED'
Can you help me to learn more?
(Other definitions for featherbed that I've seen before include "Take great care to protect" , "Subsidise" , "Pamper" , "mattress" .)