unbrakes

/ʌnˈbreɪks/
verb
  1. Third person singular present tense of unbrake: releases the brake on a vehicle or machine.
    • She always unbrakes the handbrake before starting the engine.
    • The driver unbrakes the truck before shifting into gear.
    • He unbrakes the roller coaster car at the top of the hill.
Antonyms
What does "unbrakes" mean? | whatsthatwordmean | whatsthatwordmean