Crossword Genius

Mentioned a drab drunk that will pick your pocket in Vegas? (3-5,6)

Ross

I believe the answer is:

one-armed bandit

I'm a little stuck... Click here to teach me more about this clue!

'will pick your pocket in vegas?' is the definition.
I can't judge whether this defines the answer.

'mentioned a drab drunk' is the wordplay.
'drunk' is an anagram indicator.
'mentioned'+'a'+'drab'='mentionedadrab'
'mentionedadrab' anagrammed gives 'ONE-ARMED BANDIT'.

'that' is the link.

Can you help me to learn more?

(Other definitions for one-armed bandit that I've seen before include "Gambling machine" , "Bend" .)

I've seen this clue in The Telegraph.
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