trucker

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One who drives a truck.
• noun One that is engaged in trucking goods.

from The Century Dictionary.

• noun One who trucks; one who traffics by exchange of goods.
• noun A truck-farmer; a market-gardener, or one who sells garden-stuff, especially at wholesale.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who trucks; a trafficker.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One who drives a truck.
• noun archaic or dialectal One who trucks or trafficks, by trade of goods; a trafficker.
• noun pejorative One who has done something offensive; a deceitful, dishonest, or disreputable person; a deceiver; a cheat.
• noun pejorative, Scotland A rogue; rascal; miscreant; a ne'er-do-well.
• adjective pejorative, Scotland Dishonest; resulting from or inspired by dishonesty.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone who drives a truck as an occupation