Crossword Genius

A mistake in the chit (4)

Ross

I believe the answer is:

slip

This clue is a double definition.

'a mistake' is the first definition.
(slip is a kind of mistake)

'chit' is the second definition.
(thesaurus)

'in the' acts as a link.

(Other definitions for slip that I've seen before include "Glide; petticoat" , "Error; watered clay" , "He should take his chances" , "Clay, water mix; fielder" , "Careless mistake" .)

I've seen this clue in the Evening Standard.
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