Supply seafood without container (7)

I believe the answer is:

furnish

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'supply' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for furnish that I've seen before include "Equip" , "Provide, supply" , "Supply with table and chairs etc" , "pianist's partner" , "Fit out with chairs etc." .)

I've seen this clue in The Telegraph.

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