Source : Webster's Revised Unabridged Dictionary (1913)

Cynanche \Cy*nan"che\ (s?-n?n"k?), n. [L., fr. Gr. ????? a dog's
   collar, a bad kind of sore throat. Cf. {Quinsy}.] (Med.)
   Any disease of the tonsils, throat, or windpipe, attended
   with inflammation, swelling, and difficulty of breathing and
   swallowing.