1. [n]  the people of Switzerland
2. [adj]  of or relating to Switzerland or its people or culture; "the Swiss army"

SWISS is a 5 letter word that starts with S.

1. \Swiss\, n.sing. & pl. [F. Suisse, of German origin. Cf.
   {Switzer}.]
   A native or inhabitant of Switzerland; a Switzer; the people
   of Switzerland.
   
   

2. \Swiss\, a.
   Of or pertaining to Switzerland, or the people of
   Switzerland.