Crossword Genius

Signal assent (3)

Ross

I believe the answer is:

nod

'signal assent' 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 "sign of approval" , "Affirmative action?" , "Incline the head" , "Signify assent" , "Bob the head" .)

I've seen this clue in The Telegraph and The Mirror.
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