vent-hole

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a hole for the escape of gas or air
• Syn:
vent, venthole, blowhole
• Derivationally related forms:
ventilate (for: vent)
• Hypernyms:
hole
• Hyponyms:
smoke hole
• Part Holonyms:
air passage, air duct, airway

• Từ đồng nghĩa / Synonyms:
  vent, venthole, blowhole