netty

Neddy, Netty, a certain place that will not bear a written explanation, but which is depicted to the very life in a tail-piece in the first edition of Bewick's ‘Land Birds’ (1797), p. 285.

Netty, a privy or water-closet... A common name, amongst the working classes... In common use. In my recollection it was looked upon as a euphemism.