ton

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

• noun A unit of weight equal to 2,000 pounds (0.907 metric ton or 907.18 kilograms).
• noun A unit of weight equal to 2,240 pounds (1.016 metric tons or 1,016.05 kilograms).
• noun A metric ton.
• noun A unit of capacity for cargo in maritime shipping, normally estimated at 40 cubic feet.
• noun A unit of internal capacity of a ship equal to 100 cubic feet.
• noun A unit for measuring the displacement of ships, equal to 35 cubic feet, and supposed to equal the volume taken by a long ton of seawater.
• noun A large extent, amount, or number.
• noun Used adverbially with a or in the plural to mean “to a great degree or extent” or “frequently”.

from The Century Dictionary.

• noun The prevailing mode; high fashion; style; air of fashion. See bon-ton.
• See tone.
• noun A Middle English plural of toe.
• noun A form of -town, being the word town used in place-names, as Ashton, Hampton, Wolverton, Merton.
• noun A cask; hence, a measure of capacity used for wine. See tun, 1.
• noun A measure of capacity: used
• noun for timber. 40 feet of oak or ash timber, sometimes 48 or 50 feet of hewn
• noun for flour, 8 sacks or 10 barrels
• noun for potatoes, 10 to 36 bushels
• noun for wheat, 20 bushels
• noun for earth or gravel, 1 cubie yard, sometimes 23 cubic feet
• noun for grindstones, 15 cubic feet
• noun for Portland stone, 16 cubic feet
• noun for salt, 42 bushels
• noun for lime, 40 bushels
• noun for coke, 28 bushels
• noun for the carrying capacity of a ship, 40 cubic feet (this is what is called the actual tonnage: See tonnage).
• noun A measure of weight, equal to 20 hundred-weight or 2,240 pounds avoirdupois (the long ton), or in the United States to 2,000 pounds (the short ton).

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

• pl. of toe.
• noun (Zoöl.) The common tunny, or horse mackerel.
• noun The prevailing fashion or mode; vogue.
• noun See in the Vocabulary.
• noun (Com.) A measure of weight or quantity.
• noun The weight of twenty hundredweight.
• noun (Naut. & Com.) Forty cubic feet of space, being the unit of measurement of the burden, or carrying capacity, of a vessel; as a vessel of 300 tons burden.
• noun (Naut. & Com.) A certain weight or quantity of merchandise, with reference to transportation as freight; as, six hundred weight of ship bread in casks, seven hundred weight in bags, eight hundred weight in bulk; ten bushels of potatoes; eight sacks, or ten barrels, of flour; forty cubic feet of rough, or fifty cubic feet of hewn, timber, etc.

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

• noun Fashion, the current style, the vogue.
• noun Fashionable society; those in style.
• noun A unit of weight (mass) equal to 2240 pounds (a long ton) or 2000 pounds (a short ton) or 1000 kilograms (a metric ton).
• noun A unit of volume; register ton.
• noun In refrigeration and air conditioning, a unit of thermal power defined as 12,000 BTU/h (about 3.514 kW or 3024 kcal/h), originally the rate of cooling provided by uniform isothermal melting of one short ton of ice per day at 32 °F (0 °C).
• noun colloquial, hyperbolic A large amount.
• noun slang A speed of 100 mph.
• noun slang One hundred pounds sterling.
• noun cricket One hundred runs.
• noun darts One hundred points.

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

• noun a British unit of weight equivalent to 2240 pounds
• noun a United States unit of weight equivalent to 2000 pounds