Crossword Genius

That one-eyed couple, possibly in hand (5)

Ross

I believe the answer is:

jacks

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

'hand' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for jacks that I've seen before include "salts" , "Small bowls" .)

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