alternative names for the body of a human being
"Leonardo studied the human body"
"he has a strong physique"
"the spirit is willing but the flesh is weak"
a metal mounting for the circuit components of an electronic device
"The technician carefully soldered each resistor onto the chassis to ensure the signal processor functioned correctly."
the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor
"The mechanic spent hours repairing the rusty chassis to ensure the heavy engine was securely mounted."
A base frame, or movable railway, along which the carriage of a mounted gun moves backward and forward.
"The artillery crew adjusted the heavy chassis to allow the field gun's carriage to slide smoothly over the uneven terrain during rapid repositioning."
In plain English: A chassis is the main metal frame of a vehicle that holds all its parts together and supports them while driving.
"The mechanic had to replace the car's chassis after the collision bent its frame."
Usage: In modern everyday English, chassis refers to the main structural framework that supports an automobile's engine and body parts rather than its historical military definition for artillery carriages. Use this term when describing the underlying metal frame of any vehicle or machine where components are mounted.
The word chassis comes from the French châssis, which originally meant a case. It traces its roots back to the Latin word capsa.