midgate

• mid-gate, mid gate

mid- +‎ gate. From being a door in the middle of a truck, separating the front half from the rear half.

midgate (plural midgates)

1. A panel or door, forming the rear of the cab of a truck, separating it from the truckbed, that can be removed or folded away to expand the length of the truck bed.
   • 2007 July 22, Jerry Garrett, “Battle of the Beds: Suave S.U.V.’s With Pickup Lines”, in New York Times‎:

     The Avalanche’s raison d’être is theoretically its midgate —— the rear wall of the cab, behind the second-row seats —— which can be lowered to extend the 63-inch-long bed by another 34 inches inside the cab (displacing back-seat passengers in the process).