18-wheeler

noun
18-wheel·​er | \ ˌā(t)-(ˌ)tēn-ˈwē-lər How to pronounce 18-wheeler (audio) \
variants: or eighteen-wheeler

Definition of 18-wheeler

: a trucking rig consisting of a tractor and a trailer and typically having eighteen wheels

First Known Use of 18-wheeler

1934, in the meaning defined above

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The first known use of 18-wheeler was in 1934

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