Relaxation, for instance cuddling when home (6)
I believe the answer is:
easing
'relaxation' is the definition.
(I've seen this before)
'for instance cuddling when home' is the wordplay.
'for instance' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'cuddling' means one lot of letters goes inside another (inserted letters are cuddled or held).
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'home' becomes 'in' ('he's home' can mean 'he's in').
'as'+'in'='asin'
'eg' enclosing 'asin' is 'EASING'.
(Other definitions for easing that I've seen before include "Moderation - relief" , "Becoming less severe" , "relaxing" , "falling off?" , "Relieving tension" .)