English Explanatory Dictionary

18-wheeler

English dictionary entry

Meanings

noun
  1. A big rig truck: a semi-trailer plus the truck or tractor pulling it.

Word forms

18-wheeler 18-wheelers eighteen-wheeler

Etymology

From the total number of wheels: two front steering wheels on the tractor, plus dual wheels on each end of two axles (total of 8) at the rear of the tractor and supporting the front of the trailer, plus dual wheels on two axles at the rear of the trailer.

Synonyms

semi-trailer truck semi truck semi articulated lorry artic big rig juggernaut tractor-trailer truck and trailer
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