ventilation noun

ADJ. adequate, good Inspectors checked that there was adequate ventilation. | inadequate, poor | artificial, mechanical | natural | through The windows at the back are blocked up, so there is no through ventilation.

VERB + VENTILATION give, provide Zips up the sides of the jacket give good ventilation.

VENTILATION + NOUN system | brick, duct, grille, hole, opening, pipe, shaft, slit, tube