Crossword Genius

Off bingo, we're all doing strip poker (6)

Ross

I believe the answer is:

finger

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

'off bingo we're all doing' is the definition.
I can't tell whether this defines the answer.

'strip poker' is the wordplay.
'strip' becomes 'fin' (fin is a kind of strip).
'poker' becomes 'ger' (I can't explain this - if you can you should give a lot more credence to this answer).
'fin'+'ger'='FINGER'

Can you help me to learn more?

(Other definitions for finger that I've seen before include "Touch; select" , "Fringe (anag.)" , "Slender part attached to the hand" , "Sort of bowl" , "Part of one's 10" .)

I've seen this clue in The Independent.
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