Merriam-Webster's Collegiate® Dictionary, 11th Edition
SWISS
I. noun
Etymology: Middle French Suisse, from Middle High German Swīzer, from Swīz Switzerland
Date: 1515
1. plural swiss a native or inhabitant of Switzerland, one that is of swiss descent, any of various fine sheer fabrics of cotton originally made in Switzerland, swiss cheese ,
II. adjective
Date: 1530
of, relating to, or characteristic of Switzerland or the swiss