From French 'garer' (to shelter), from Frankish *warōn (to guard) — kin to 'guard,' 'guarantee,' and 'ward.'
A building or indoor area for housing a motor vehicle or vehicles.
From French 'garage' (shelter, act of docking, a storage place), from 'garer' (to shelter, to dock, to protect), from Old French 'garer/guarer' (to protect, to guard, to preserve), from Frankish *warōn (to guard, to take care), from Proto-Germanic *warōną (to guard, to protect), from PIE *wer- (to cover, to guard). A garage is literally 'a sheltering place' — a guardian structure for vehicles. Key roots: *wer- (Proto-Indo-European: "to cover, to protect, to guard").
'Garage,' 'guard,' 'guarantee,' 'ward,' 'warden,' and 'warn' all come from the same Germanic root meaning 'to protect.' A garage guards your car. A guard protects you. A guarantee is a promise of protection. A ward is under protection. A warden is a protector. The 'g-' and 'w-' forms reflect the Norman French