Crossword Genius

Source of maple syrup (3)

Ross

I believe the answer is:

sap

'source of maple syrup' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for sap that I've seen before include "dig tunnels" , "Fluid in plant stem" , "Weak foolish person" , "Moisture in tree or informal dunce" , "trench used in siege" .)

I've seen this clue in The New York Times.
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