orifice

Từ điển WordNet v3.1 - WordNet Dictionary

noun

an aperture or hole that opens into a bodily cavity (Freq. 2)
- the orifice into the aorta from the lower left chamber of the heart
• Syn:
opening, porta
• Derivationally related forms:
open (for: opening)
• Hypernyms:
passage, passageway
• Hyponyms:
vent, blastopore, aortic orifice, stoma, porta hepatis,
spiracle, mouth, os, cervix, uterine cervix, cervix uteri,
fenestra, cardia, introitus, urethral orifice, external orifice, pylorus,
anus, fontanelle, fontanel, soft spot, naris, rima

• Từ đồng nghĩa / Synonyms:
  opening, porta