Like Cinerama, possibly? (8)
I believe the answer is:
american
'like' is the definition.
Although both the answer and definition are adjectives, I don't see how they can define each other.
'cinerama possibly?' is the wordplay.
'possibly?' indicates an anagram (I've seen 'possibly' mean this).
'cinerama' is an anagram of 'AMERICAN'.
Can you help me to learn more?
(Other definitions for american that I've seen before include "one like Garfield?" , "Beauty of Film" , "Nationality of Edgar Allan Poe" , "From across the pond" , "countryman" .)