Lick the top off? That's disgusting! (3)

I believe the answer is:

ick

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'off? that's disgusting' is the definition.
I can't judge whether this defines the answer.

'lick the top' is the wordplay.
'the top' means to remove the first letter.
'lick' with its first letter taken away is 'ICK'.

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I've seen this clue in The Independent.

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