Word of warning to golfers (4)

I believe the answer is:

fore

'word of warning to golfers' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for fore that I've seen before include "Golfer's warning shout" , "At the bow" , "Word of warning to golfers" , "Ancestor" , "A golfer's warning cry - ball in flight" .)

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

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