Crossword Genius

Signalling apparatus (9)

Ross

I believe the answer is:

semaphore

'signalling apparatus' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for semaphore that I've seen before include "Messaging by flags" , "Signalling apparatus" , "Way to signal" , "flagging" , "Old flag signalling system" .)

I've seen this clue in the Sydney Morning Herald.
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