chas ‧ sis /ˈʃæsiː/ BrE AmE noun ( plural chassis /-siːz/) [countable]
[ Date: 1600-1700 ; Language: French ; Origin: châssis , from Latin capsa ; ⇨ ↑ case 1 ]
1 . the frame on which the body, engine, wheels etc of a vehicle are built
2 . the landing equipment of a plane