Spooner's to chuck out dismal sailor (6)

I believe the answer is:

sinbad

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

I don't understand the rest of the clue.

(Other definitions for sinbad that I've seen before include "Sailor of The thousand-and-one Nights" , "Sailor of Eastern tale" , "Legendary sailor from Arabian nights" , "The 1001 Nights sailor" , "Pantomime sailor from the Arabian Nights (6)" .)

I've seen this clue in The Times.

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