Rear for higher things? (5)

I believe the answer is:

raise

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'rear' is the definition.
(I know that rear can be written as raise)

I don't understand how the remainder of the clue works.

(Other definitions for raise that I've seen before include "Advance" , "Heighten" , "Wage increase" , "Breed" , "Increased earnings in America" .)

I've seen this clue in The Irish News.

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