It weighs the remainder (7)

I believe the answer is:

balance

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'the remainder' is the definition.
(I know that balance is a type of remainder)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for balance that I've seen before include "Equilibrium or steady position" , "Equilibrium or symmetry" , "Rest" , "Cab lane (anag)" , "Libra - amount in account" .)

I've seen this clue in The Guardian and The Globe and Mail.

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