1n. a cheap light car, especially a Ford of early make.
1910  (1921)  ". . . You stick to me an' you'll be travellin' 'round the country in a flivver."
1939  [We were] trundling round the country in a flivver with Mr. Fiddler at the wheel.
1958  "The term flivver, for example, used in this book to describe any ancient motor car, was never used to describe a car other than a Model T Ford."
2n.Obs. (attributive uses) cheaply made; small; insignificant; of little account.
1917  [He is] the greatest little flivver statesman in captivity.
1936  Numerous successful experiments are being conducted with so-called "flea" or "flivver" types [of aeroplanes].