Youngster dropping an E on teeming Spanish island (8)

I believe the answer is:

tenerife

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

I don't understand the rest of the clue.

(Other definitions for tenerife that I've seen before include "Fire teen off the island" , "One of the Canary Islands" , "Largest of the Canary Islands" , "There's an inter fee, strangely, on the island" , "Island of the Canaries" .)

I've seen this clue in The Times.

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