Superior kind of cut (5)

I believe the answer is:

upper

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'superior' is the definition.
(eg an upper house in a parliament)

I can't explain the remainder of the clue.

(Other definitions for upper that I've seen before include "form of stimulant" , "Part of a shoe; drug" , "Higher; more northerly" , "Higher in rank" , "Higher in position; drug" .)

I've seen this clue in The Globe and Mail.

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