A "dickie-seat" is an old-fashioned term for a fold-down seat in a car's trunk area or a rumble seat on the exterior of the car. However, there are other words you could use instead of "dickie-seat" to refer to this type of seating. For example, you could call it a jump seat, a rumble bench, or even a folding chair. Some people might also refer to it as a spare seat, especially if it was added to the car as a secondary seating option. Regardless of what you call it, a "dickie-seat" or any of its synonyms was a popular feature in vintage cars and is still celebrated today as a quaint reminder of automotive history.