Large motor vehicles designed for transporting goods or materials. Can also refer to wheeled frames or platforms for moving heavy objects.
From Greek 'trokhos' meaning wheel, through Latin 'trochus'. Originally referred to small wheels or pulleys, then wheeled platforms, finally evolving to mean motorized vehicles in the early 20th century.
Modern semi-trucks can haul up to 80,000 pounds and are responsible for moving about 70% of all freight in the United States, making them the invisible backbone of the economy. The average American relies on trucked goods multiple times daily without realizing it.
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