Genesis 2:21

The bone was a rib. A rib is a thin bone in the upper part of the body.

v23 Then Adam said,

‘This at last is my bone

and it is part of my body.

I shall call her “woman”

because she came out of man.’

v24 Therefore a man leaves his father and his mother and he and his wife join. Then the two people become one body.

v25 Adam and his wife were both naked. And they did not think that it was wrong.