Yet a crooked dealer may deal himself one (8)

I believe the answer is:

straight

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'yet' is the definition.
Both the answer and definition are adverbs. Perhaps there's an association between them I don't understand?

I can't explain the rest of the clue.

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(Other definitions for straight that I've seen before include "Respectable" , "Unswerving" , "Poker hand of 5 consecutive cards" , "Undeviating" , "Instantly - honest" .)

I've seen this clue in The Globe and Mail.

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