Beet color (3)
I believe the answer is:
red
'beet color' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for red that I've seen before include "Colour for danger" , "Crimson" , "Type of wine" , "River, its source in the US, flowing north to empty into L Winnipeg" , "- Cross; - admiral" .)