Seafood devoured by four Chinooks (6)
I believe the answer is:
urchin
'seafood' is the definition.
'devoured by four chinooks' is the wordplay.
'devoured by' says the answer is hidden in the clue.
'URCHIN' is hidden in the letters of 'four chinooks'.
(Other definitions for urchin that I've seen before include "Waif" , "Ragged mischief-maker" , "Mischievous or ragged child" , "Ragged boy" , "Ragged child; marine animal" .)