Semitrailers

Part of speech: noun

Definitions

1. Large trailers designed to be attached to and partially supported by a truck tractor ; commonly used for transporting goods and cargo over long distances
2. Freight containers mounted on a wheeled frame that connect to a tractor unit, sharing the load between the trailer and the pulling vehicle for efficient hauling
3. Heavy-duty cargo trailers that do not have front axles and rely on a tractor to bear part of their weight, enabling flexible transport of bulky or heavy shipments

Etymology: "Semitrailers" is simply the plural of "semitrailer," so its history lies in the parts it is built from. The first part, "semi-," comes from Latin "semi-," meaning "half," which English has used since early days to mark something partial or incomplete. The second part, "trailer," is a noun formed from the verb "trail," describing a vehicle pulled behind another. Put together, the word describes a load carrier that is only half supported by its own wheels, with the front resting on the tractor pulling it. The plural follows the regular English pattern of adding "-s" to the singular, so each individual unit is one semitrailer and a fleet of them is semitrailers.

Synonyms: trailers, truck trailers, semi trucks