Crossword Genius

Signal in Morse code (3)

Ross

I believe the answer is:

dot

'signal in morse code' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for dot that I've seen before include "Spot, speck" , "Point; speck" , "Little mark" , "One signal used in Morse code" , "Small round spot" .)

I've seen this clue in The Irish Times and the Irish Times (Simplex).
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