Crossword Genius

Meadow bound not to be supplied with power (3)

Ross

I believe the answer is:

lea

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'meadow' is the definition.
(a lea is a grassy area)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for lea that I've seen before include "'The lowing herd wind slowly o'er the . . .'" , "Open area of grassy or arable land" , "Grazing land" , "authority for teachers" , "Pasture, London river" .)

I've seen this clue in The Independent.
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