Crossword Genius

New arrival concealing cocaine dependence (9)

Ross

I believe the answer is:

addiction

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'new arrival' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

'concealing cocaine dependence' is the wordplay.
'concealing' suggests deleting specific letters.
'dependence' becomes 'cocaineaddiction' (cocaine addiction is a kind of dependence).
'cocaineaddiction' with 'cocaine' removed is 'ADDICTION'.

Can you help me to learn more?

(Other definitions for addiction that I've seen before include "Obsession" , "The origin of dependence" , "Something to kick" , "Bug one's caught" , "hard to stop" .)

I've seen this clue in The Guardian.
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