Today’s word is “enceinte,” meaning a fortified wall enclosing a town or castle, or the place enclosed by the wall. It’s from Latin by way of France, with an original meaning of “to gird.” It apparently was all the thing back in the early 1700s.
Interestingly — for me, anyway; you might not give a damn — it’s also an archaic word for pregnant. She let down her enceinte and got enceinte?