Found 2 items, similar to Sphincter.
English → English (WordNet) Definition: sphincter sphincter n : a ring of muscle that contracts to close an opening [syn: anatomical sphincter , sphincter muscle]
English → English (gcide) Definition: Sphincter Sphincter \Sphinc"ter\, n. [NL., fr. ??? to bind tight.] (Anat.) A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder. [1913 Webster] Sphincter \Sphinc"ter\, a. (Anat.) Of, pertaining to, or designating, a sphincter; as, a sphincter muscle. [1913 Webster]