the.com/chassis
the skeleton nobody photographs but everything else stands on.
means the structural frame of a vehicle or machine that everything else — engine, body, seats, ambitions — gets bolted onto.
from from french chassis meaning frame, tracing back to latin capsa, a box — same root as case and capsule, so your car's chassis is technically its coffin's cooler cousin.
unibody shiftmost cars ditched separate frames by the 1980s
trucks kept itbody-on-frame survives for towing strength
electronics term toochassis means the metal casing of circuits