One bloke welcomes another one from across the pond (8)
I believe the answer is:
american
'from across the pond' is the definition.
(I've seen this before)
'one bloke welcomes another one' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'bloke' becomes 'man' (informal term for a man).
'welcomes' indicates putting letters inside (in sense of 'invites in').
'another one' becomes 'eric' (I am not sure about this - if you are sure you should believe this answer much more).
'man' placed around 'eric' is 'merican'.
'a'+'merican'='AMERICAN'
Can you help me to learn more?
(Other definitions for american that I've seen before include "US citizen in Cinerama (8)" , "Native to the USA" , "- Indian; - football" , "From across the pond" , "Game played on a gridiron" .)