FLATBED
flatbed
(noun) an open truck bed or trailer with no sides; used to carry large heavy objects
flatcar, flatbed, flat
(noun) freight car without permanent sides or roof
Source: WordNet® 3.1
Etymology
Noun
flatbed (plural flatbeds)
An open freight vehicle with no sides, designed to carry heavy or outsized loads.
A railway freight car with no sides; a flatcar.
(computing) A document scanner with a flat bed.
Adjective
flatbed (not comparable)
Having a flat bed.
Verb
flatbed (third-person singular simple present flatbeds, present participle flatbedding, simple past and past participle flatbedded)
To transport by flatbed.
Usage notes
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.
Source: Wiktionary