cwim
Believe it is Olde English dating back to Chaucerian and Shakesperian times. Means c*nt as in the Eskimo Nell example. Growing up in the 1940s in England it is the word we learned years before the more modern version. Not really in the US.
Quim, kwim or cwim are variants for old English slang for a woman's genitals probably dating back to Saxon times.