Bear away flag (8)
I believe the answer is:
standard
'flag' is the definition.
(I know that flag can be written as standard)
'bear away' is the wordplay.
'bear' becomes 'stand' (bear can mean to stand or endure).
'away' becomes 'ard' (I've seen this in other clues).
'stand'+'ard'='STANDARD'
(Other definitions for standard that I've seen before include "Flag - norm" , "Ceremonial flag" , "Ordinary Level?" , "Flag - of the usual kind" , "some soldiers find bearable?" .)