Source : Webster's Revised Unabridged Dictionary (1913)

Schweitzerkase \Schweit"zer*k["a]"se\, n. [G. schweizerk["a]se
   Swiss cheese.]
   Gruy[`e]re cheese.

Gruyere cheese \Gru"y[`e]re` cheese"\
   A kind of cheese made at Gruy[`e]re, Switzerland. It is a
   firm cheese containing numerous cells, and is known in the
   United States as {Schweitzerk["a]se}.