Merlot, for example (3)
I believe the answer is:
red
'merlot for example' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for red that I've seen before include "Stop light" , "The colour of the former Russian army" , "'If you see it, perhaps you're angry (3)'" , "Scarlet or vermilion" , "Colour for a blusher" .)