Ruin treat (5)

I believe the answer is:

spoil

I believe this is a double definition.

'ruin' is the first definition.
(I know that spoil is a type of ruin)

'treat' is the second definition.
(I know that spoil is a type of treat)

(Other definitions for spoil that I've seen before include "Wreck" , "Booty" , "Waste from mining; mar" , "Harm or destroy" , "Impair" .)

I've seen this clue in The Independent.

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