i Register
In some senses, chassis is marked as slang. Watch for register when choosing this word.
VERB + CHASSIS
four-wheeled, pocket-sized, rested
The mechanic rested the chassis on concrete blocks before inspecting the undercarriage.
CHASSIS + NOUN
camera, car, genesis
The mechanic lifted the car chassis to inspect the rust underneath before repairs began.
PREP.
on
The mechanic found rust damage on the chassis during the routine inspection.