A grassy place (3)

I believe the answer is:

rye

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'a grassy place' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

This is all the clue.

Can you help me to learn more?

(Other definitions for rye that I've seen before include "Whisky; Sussex town" , "Type of grass" , "Grain - whiskey - port" , "Whiskey (US)" , "Gypsy gentleman" .)

I've seen this clue in the Evening Standard.

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