LEARNit Dictionary
sphincter
noun
/ˈsfɪŋktə(r)/
UK
/ˈsfɪŋktər/
US
1
a ring of muscle that surrounds an opening in the body and can become tight to close it
ماهیچه حلقوی, عضله اسفنکتری, اسفنکتر, دریچه عضلانی