Article dumped outside home, yours no longer? (5)
I believe the answer is:
thine
'yours no longer?' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'article dumped outside home' is the wordplay.
'article' becomes 'the' (the definite article in English).
'dumped outside' means one lot of letters goes inside another (I've seen this in other clues).
'home' becomes 'in' ('he's home' can mean 'he's in').
'the' enclosing 'in' is 'THINE'.
Can you help me to learn more?
(Another definition for thine that I've seen is " Yours (archaic)".)