Sex object in Germany briefly (6)
I believe the answer is:
gender
'sex' is the definition.
(synonyms)
'object in germany briefly' is the wordplay.
'object' becomes 'end' (both can mean a goal or purpose).
'in' is an insertion indicator.
'germany briefly' becomes 'ger' (I've seen this in other clues; 'briefly' asks for a short form).
'end' going within 'ger' is 'GENDER'.
(Other definitions for gender that I've seen before include "Masculine, feminine or neuter" , "What divides males and females" , "Sexual status" , "Eg, male" , "Class such as female or male" .)