truck

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

• intransitive verb To have dealings or commerce; traffic.
• intransitive verb To exchange; barter.
• intransitive verb To peddle.
• noun The trading of goods or services without the exchange of money; barter.
• noun Articles of commerce; trade goods.
• noun Garden produce raised for the market.
• noun Informal Worthless goods; stuff or rubbish.
• noun Informal Dealings; business.
• noun Any of various heavy motor vehicles designed for carrying or pulling loads.
• noun A hand truck.
• noun A wheeled platform, sometimes equipped with a motor, for conveying loads in a warehouse or freight yard.
• noun A set of bookshelves mounted on four wheels or casters, used in libraries.
• noun One of the swiveling frames of wheels under each end of a railroad car or trolley car.
• noun Either of the frames housing a pair of wheels on a skateboard or landboard.
• noun Nautical A small piece of wood placed at the top of a mast or flagpole, usually having holes through which halyards can be passed.
• noun Chiefly British A railroad freight car without a top.
• intransitive verb To transport by truck.
• intransitive verb To carry goods by truck.
• intransitive verb To drive a truck.
• intransitive verb Slang To move or travel in a steady but easy manner.

from The Century Dictionary.

• To put in a truck; send or convey by truck: as, to truck cattle.
• To drive or use a truck; transport goods by means of a truck.
• To exchange; swap; barter; hence, to traffic; deal; trade by exchanging commodities; bargain; negotiate: followed with with or for (with a person, for a thing).
• To exchange; give in exchange; barter; swap: as, to truck knives for gold-dust.
• To peddle; hawk.
• noun A kind of game (see etymology). Compare troco.
• noun Exchange of commodities; barter. See truck system, below.
• noun Traffic; intercourse; dealing.
• noun The truck system.
• noun Commodities for barter or trade.
• noun The produce of a market-garden.
• noun A statute of 1870 (33 and 34 Vict., c. 105), also called the Truck Commission Act, which appointed a commission to inquire into the working of the act of 1831.
• noun A small wooden wheel not bound with iron; a cylinder.
• noun A wheeled vehicle, of which there are many kinds, used for moving or transporting burdens.
• noun A group of two, three, or more pairs of wheels in one frame, for supporting one end of a railway-car or locomotive; a car-truck.
• noun In gunnery, a circular piece of wood or metal, like a wheel, fixed on an axletree, for moving ordnance. See casemate-truck.
• noun A circular piece of wood fixed on the head of each of a vessel's highest masts, and having small sheave-holes in it through which signal-halyards are rove.

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

• transitive verb To exchange; to give in exchange; to barter.
• intransitive verb To exchange commodities; to barter; to trade; to deal.
• noun A small wheel, as of a vehicle; specifically (Ord.), a small strong wheel, as of wood or iron, for a gun carriage.
• noun A low, wheeled vehicle or barrow for carrying goods, stone, and other heavy articles.
• noun (Railroad Mach.) A swiveling carriage, consisting of a frame with one or more pairs of wheels and the necessary boxes, springs, etc., to carry and guide one end of a locomotive or a car; -- sometimes called bogie in England. Trucks usually have four or six wheels.
• noun A small wooden cap at the summit of a flagstaff or a masthead, having holes in it for reeving halyards through.
• noun A small piece of wood, usually cylindrical or disk-shaped, used for various purposes.
• noun engraving A freight car.
• noun A frame on low wheels or rollers; -- used for various purposes, as for a movable support for heavy bodies.