Violent turmoil as merlot mixed with last of rum (9)

I believe the answer is:

maelstrom

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'violent turmoil' is the definition.
'maelstrom' can be an answer for 'turmoil' (I've seen this before). I'm not sure about the 'violent' bit.

'as merlot mixed with last of rum' is the wordplay.
'mixed with' indicates an anagram.
'last of' indicates one should take the final letters.
The last letter of 'rum' is 'm'.
'as'+'merlot'='asmerlot'
'asmerlot' anagrammed with 'm' gives 'MAELSTROM'.

Can you help me to learn more?

(Other definitions for maelstrom that I've seen before include "fearsome current" , "confused state of affairs" , "Large whirlpool" , "Strong circular current of water" , "Norwegian whirlpool" .)

I've seen this clue in The Telegraph.

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