Assign property (9)
I believe the answer is:
attribute
I believe this is a double definition.
'assign' is the first definition.
(I know that assign can be written as attribute)
'property' is the second definition.
(I know that property can be written as attribute)
(Other definitions for attribute that I've seen before include "Assign" , "Credit - property" , "A special characteristic" , "Quality representative of person" , "Ascribe, impute" .)