CHASSIS
chassis
(noun) the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor
chassis
(noun) a metal mounting for the circuit components of an electronic device
Source: WordNet® 3.1
Etymology
Noun
chassis (plural chassis)
A base frame, or movable railway, along which the carriage of a mounted gun moves backward and forward.
The base frame of a motor vehicle.
A frame or housing containing electrical or mechanical equipment, such as on a computer.
(slang) A woman's buttocks.
Source: Wiktionary
Chas"sis, n. Etym: [F. ch.] (Mil.)
Definition: A traversing base frame, or movable railway, along which the
carriage of a barbette or casemate gum moves backward and forward.
[See Gun carriage.]
Source: Webster’s Unabridged Dictionary 1913 Edition