The Collaborative International Dictionary of English v.0.48:

Emmental \Emmental\, Emmentaler \Emmentaler\, Emmenthal
\Emmenthal\, Emmenthaler \Emmenthaler\n.
   a type of large-holed Swiss cheese.

   Syn: Emmenthal, Emmental, Emmenthaler.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Emmental
    n 1: Swiss cheese with large holes [syn: Emmenthal,
         Emmental, Emmenthaler, Emmentaler]