Crossword Genius

Non-verbal communication (6)

Ross

I think it could be either:

Which length description are you looking for?:

6

4,8

'non-verbal communication' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for signal that I've seen before include "Indication; a train control" , "important to train drivers > striking" , "Gesture with meaning" , "Indicate" , "Aligns (anag) -- gesture" .)

I've seen this clue in The Irish Times.
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