Oriental flower fills small space (7)
I believe the answer is:
eastern
'oriental' is the definition.
(synonyms)
'flower fills small space' is the wordplay.
'flower' becomes 'aster ' (type of flower).
'fills' indicates putting letters inside.
'small space' becomes 'en' (in printing, a space as wide as a letter 'n').
'aster' put into 'en' is 'EASTERN'.
(Other definitions for eastern that I've seen before include "From Japan, say" , "towards the sun" , "China?" , "Indian perhaps" , "Of the direction of the rising sun" .)