Request to cut corner tree (5)

I believe the answer is:

beech

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'tree' is the definition.
(beech is a kind of tree)

I don't understand the remainder of the clue.

(Other definitions for beech that I've seen before include "It has branches" , "Tree variety" , "Nut-bearing tree" , "Type of tree" , "Tree of Fagus genus" .)

I've seen this clue in The Hindu.

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