a shaft in a building; serves as an air passage for ventilation
the act of supplying fresh air and getting rid of foul air
a mechanical system in a building that provides fresh air
free and open discussion of (or debate on) some question of public interest
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
a long pointed rod used as a tool or weapon
