anus

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the excretory opening at the end of the alimentary canal
• Derivationally related forms:
anal
• Hypernyms:
orifice, opening, porta
• Hyponyms:
arse, arsehole, asshole, bunghole, imperforate anus
• Part Holonyms:
rectum
• Part Meronyms:
anal sphincter, sphincter ani, musculus sphincter ani