Conspicuous gesture (6)

I believe the answer is:

signal

I believe this is a double definition.

'conspicuous' is the first definition.
(I've seen this before)

'gesture' is the second definition.
(I've seen this before)

(Other definitions for signal that I've seen before include "beacon" , "Non-verbal action with an encoded message" , "Message in the form of a gesture" , "(Railway) light" , "important to train drivers > striking" .)

I've seen this clue in The Telegraph, The Irish Independent and The Guardian.

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