Crossword Genius

Standard measure (4)

Ross

I believe the answer is:

rule

I believe this clue is a double definition.

'standard' is the first definition.
(synonyms)

'measure' is the second definition.
(I know that rule is a type of measure)

(Other definitions for rule that I've seen before include "Control; printed line" , "Exercise power (over)" , "Govern with straight stick?" , "Control, government" , "Control using lure." .)

I've seen this clue in The Globe and Mail and the Newsday.com.
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