Term: ventilation shaft: a shaft in a building; serves as an air passage for ventilation
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: nonproliferation: the prevention of something increasing or spreading (especially the prevention of an increase in the number of countries possessing nuclear weapons)
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: harem: living quarters reserved for wives and concubines and female relatives in a Muslim household
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: mule: hybrid offspring of a male donkey and a female horse; usually sterile
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: concession: a contract granting the right to operate a subsidiary business
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: genus maxillaria: large genus of tropical American epiphytic orchids with persistent leathery leaves and single-flowered scapes
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: brigade: army unit smaller than a division
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: qatari: a native or inhabitant of Qatar
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: housecraft: skill in domestic management
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: fairground: an open area for holding fairs or exhibitions or circuses
Broader: shaft: a vertical passageway through a building (as for an elevator) | Unrelated: clubbing: a condition in which the ends of toes and fingers become wide and thick; a symptom of heart or lung disease