2 entries under this word

Jump-seat

Jŭmp'-sēat, n.

noun

n. A carriage constructed with a movable seat, so as to be readily changed from the one-seated to the two-seated form; a movable carriage-seat.

A one-seat horse-drawn carriage with large spoked wheels and a raised jump seat.
Jump-seat. One-seat form.
An antique two-seat, two-wheeled carriage with large spoked wheels and a raised rear seat.
Jump-seat. Two-seat form.

Jŭmp'-sēat, a.

adjective

a. Having a movable seat; as, a jump-seat rock-away.