Crossword Genius

Raptor thus brought up its food (6)

Ross

I believe the answer is:

osprey

'raptor' is the definition.
(osprey is a kind of raptor)

I cannot understand how the rest of the clue works.

(Other definitions for osprey that I've seen before include "Fish-eater" , "One flying" , "I grab fish" , "Large fish-eating bird of prey" , "Large bird preying on fish in inland waters" .)

I've seen this clue in The Guardian.
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