air brake
US /ˈer breɪk/
UK /ˈer breɪk/

1.
freno ad aria, freno pneumatico
a brake operated by compressed air, used especially on heavy vehicles such as trucks and trains
:
•
The truck driver applied the air brake to slow down on the steep decline.
L'autista del camion ha azionato il freno ad aria per rallentare sulla ripida discesa.
•
Trains rely on powerful air brakes for safe stopping.
I treni si affidano a potenti freni ad aria per una frenata sicura.