nounchiefly North American
An extra seat in a car or taxi that folds back when not in use.
More example sentences
- During these training sorties, the instructor sits in the modified jump seat between the pilot's and copilot's seats, and the student occupies the copilot's seat.
- He returns to his seat and I take the jump seat in the cockpit.
- Are we to believe that Frank just hopped on a cockpit jump seat for his free ride with all the pilots in the airport having been warned to be on the lookout for a man fitting just his description?
Definition of jump seat in:
- The US English dictionary