organ of locomotion and balance in fishes and some other aquatic animals | a motor vehicle with four wheels; usually propelled by an internal combustion engine |
a stabilizer on a ship that resembles the fin of a fish | a wheeled vehicle adapted to the rails of railroad |
one of a set of parallel slats in a door or window to admit air and reject rain | where passengers ride up and down |
a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater) | the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant |
one of a pair of decorations projecting above the rear fenders of an automobile | a conveyance for passengers or freight on a cable railway |
the cardinal number that is the sum of four and one | |