Bible Dictionaries
Sphincter

Webster's Dictionary

(1):

(a.) Of, pertaining to, or designating, a sphincter; as, a sphincter muscle.

(2):

(n.) A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.

Bibliography Information
Webster, Noah. Entry for 'Sphincter'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/sphincter.html. 1828.