Standard some citizens ignore (6)

I believe the answer is:

ensign

'standard' is the definition.
(thesaurus)

'some citizens ignore' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'ENSIGN' is hidden within 'citizens ignore'.

(Other definitions for ensign that I've seen before include "In British infantry, a colours bearer" , "National flag" , "Lowly ranked officer" , "Badge, flag" , "Flag - officer, formerly" .)

I've seen this clue in The Times.

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