sphincter ani

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the sphincter muscle of the anus
• Syn:
anal sphincter, musculus sphincter ani
• Hypernyms:
sphincter, anatomical sphincter, sphincter muscle
• Part Holonyms:
anus
• Part Meronyms:
musculus sphincter ani externus, musculus sphincter ani internus