Crossword Genius

Signal agreement (3)

Ross

I believe the answer is:

nod

'signal agreement' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for nod that I've seen before include "Signal with the head" , "Assenting head gesture" , "Show assent" , "Signify assent" , "Shake head in agreement" .)

I've seen this clue in The Guardian, the Evening Standard and The New York Times.
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