A person, company, or vehicle that hauls; someone whose job is to transport goods or materials.
From 'haul' plus '-er,' a suffix forming agent nouns (one who does the action). Common occupational word formation in English.
In American English, 'hauler' is the standard term for truckers and transport workers, while British English prefers 'haulier'—a small linguistic difference that reveals different historical development of trade terminology.
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