Cynic spasm

(redirected from risus caninus)
Also found in: Medical.
(Med.) a convulsive contraction of the muscles of one side of the face, producing a sort of grin, suggesting certain movements in the upper lip of a dog.
(Med.) See under Cynic.

See also: Cynic, Spasm

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.