Chas"sis (?), n. The under part of
an automobile, consisting of the frame (on which the body is mounted)
with the wheels and machinery.
Chas"sis (?), n. [F.
châssis.] (Mil.) A traversing base
frame, or movable railway, along which the carriage of a barbette
or casemate gun moves backward and forward. [See Gun
carriage.]