What does 'nothing but skin' mean today?
It could be a reference used to mean "without clothing" or
"nude" or the like. Here are a couple of lines from a TV show.
"What did you wear when you were dancing?" "Nothing but skin." The
first line is a person asking an exotic dancer (a former one,
actually) what she wore when she was working as a dancer. The reply
says it all. She is telling the person asking the question that she
danced nude. She didn't wear anything at all. [This is from a CSI
episode. Willows was being asked the question, which may not be
worded exactly as asked, but the idea is 100% correct. And the
answer is (if memory serves) a direct quote. Just so you know.]