Home from sea, has been playing round again (6)
I believe the answer is:
ashore
'again' is the definition.
Both the definition and answer are adverbs. Maybe you can see an association between them that I don't see?
'home from sea has been playing round' is the wordplay.
'home' becomes 'HO' (abbreviation for house).
'from' indicates an anagram (the anagram comes from the same letters).
'has' is an insertion indicator.
'been playing' becomes 'r' (I can't explain this - if you can you should believe this answer much more).
'round' indicates putting letters inside.
'sea' anagrammed gives 'ase'.
'ase' placed around 'r' is 'asre'.
'ho' inserted within 'asre' is 'ASHORE'.
Can you help me to learn more?
(Other definitions for ashore that I've seen before include "on the coast" , "Beached" , "Aground" , "beach" , "Onto land (from the water)" .)