Crossword Genius

A trader who will give a gambler a hand? (6)

Ross

I believe the answer is:

dealer

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

'a trader' is the definition.
(I know that trader can be written as dealer)

'will give a gambler a hand?' is the wordplay.
I cannot really understand how this works, but
'give' could be 'deal' (dealing is a kind of giving) and 'deal' is present in the answer.
'hand?' could be 'r' (abbreviation for right, as in the right-hand side) and 'r' is found within the answer.
A single letter 'e' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'who' acts as a link.

Can you help me to learn more?

(Other definitions for dealer that I've seen before include "Trader as on Stock Exchange" , "Person engaged in trading" , "Stockjobber" , "Buyer and seller of goods" , "See 24" .)

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