Uttered location of seafood (6)
I believe the answer is:
plaice
'seafood' is the definition.
(I know that plaice is a type of seafood)
'uttered location' is the wordplay.
'uttered' shows a homophone (sound like).
'location' becomes 'place' (a location is a place).
'place' sounds like 'PLAICE'.
'of' is the link.
(Other definitions for plaice that I've seen before include "Edible flatfish" , "Brown flatfish" , "Tasty flatfish I place here" , "The fish sounds as if it hits the spot" , "Flatfish; sounds like put" .)