Of overseas origin, like Ian (5)
I believe the answer is:
asian
'of overseas origin' is the definition.
The definition suggests a singular noun which matches the answer.
'like ian' is the wordplay.
'like' becomes 'as'.
'as'+'ian'='ASIAN'
Can you help me to learn more?
(Other definitions for asian that I've seen before include "Continental native" , "Of the largest continent" , "One from the East" , "One of eastern origin" , "Relating to one of the continents" .)