flatbed

flat +‎ bed

flatbed (plural flatbeds)

1. An open freight vehicle with no sides, designed to carry heavy or outsized loads.
2. A railway freight car with no sides; a flatcar.
3. (computing) A document scanner with a flat bed.

flatbed (not comparable)

1. Having a flat bed.

   I can't scan the whole document quickly because I only have a flatbed scanner.

   The accident left the contents of a flatbed trailer scattered across all three lanes.

flatbed (third-person singular simple present flatbeds, present participle flatbedding, simple past and past participle flatbedded)

1. To transport by flatbed.
   • 2000, Paullina Simons, The Bronze Horseman, →ISBN:

     Tatiana went from working the pulley that lifted the treadless tank and placed it on tread, to painting the red star on a finished tank ready to be flatbedded and put into production.

   • 2011 -, James Hayman, The Cutting, →ISBN:

     'Well, we won't know about prints till we can flatbed his SUV back to Middle Street and check, but given he left the car in a hurry, my guess is we'll find something, maybe quite a lot.

   • 2012, Rus Bradburd, Make It, Take It, →ISBN, page 23:

     “I'm going to have to flatbed this vehicle,” Larry said with an air of importance that irritated Pytel.

The verb "to flatbed" is most commonly used when referring to the transportation of a vehicle, to make it clear that the vehicle is not being driven.