adjective, fat⋅ter, fat⋅test, noun, verb, fat⋅ted, fat⋅ting.| 1. | having too much flabby tissue; corpulent; obese: a fat person. |
| 2. | plump; well-fed: a good, fat chicken. |
| 3. | consisting of or containing fat; greasy; oily: fat gravy; fat meat. |
| 4. | profitable, as an office: a fat job on the city commission. |
| 5. | affording good opportunities, esp. for gain: a fat business contract. |
| 6. | wealthy; prosperous; rich: He grew fat on dishonest profits. |
| 7. | big, broad, or extended; thick: a fat sheaf of bills. |
| 8. | plentiful; abundant: a fat supply of food. |
| 9. | plentifully supplied: a fat larder; a fat feast. |
| 10. | dull; stupid: fat clumsiness of manner. |
| 11. | abounding in a particular element: Fat pine is rich in resin. |
| 12. | (of paint) having more oil than pigment. Compare lean 2 (def. 6). |
| 13. | (of coal) highly bituminous; rich in volatile hydrocarbons. |
| 14. | Ceramics. long 1 (def. 25). |
| 15. | fertile, as land: Everything grows in this fat soil. |
| 16. | any of several white or yellowish greasy substances, forming the chief part of adipose tissue of animals and also occurring in plants, that when pure are colorless, odorless, and tasteless and are either solid or liquid esters of glycerol with fatty acids; fats are insoluble in water or cold alcohol but soluble in ether, chloroform, or benzene: used in the manufacture of soap, paints, and other protective coatings and in cooking. |
| 17. | animal tissue containing much of this substance; loose flesh; flabbiness: to have rolls of fat around one's waist. |
| 18. | the richest or best part of anything. |
| 19. | obesity; corpulence: In his later years, he inclined to fat. |
| 20. | Slang. especially profitable or advantageous work. |
| 21. | an overabundance or excess; superfluity. |
| 22. | action or lines in a dramatic part that permit an actor to display abilities. |
| 23. | Also, phat. Also called lift. Typesetting. matter that can be composed easily and profitably, esp. from standing type, illustrations, or the like: fat work. Compare lean 2 (def. 11). |
| 24. | to make or become fat. |
| 25. | a fat chance, Slang. a very slight chance; small probability: A fat chance he has of winning the title! |
| 26. | a fat lot, Slang. little or not at all: A fat lot they care about anyone else's troubles! |
| 27. | chew the fat. chew (def. 11). |
| 28. | the fat is in the fire,
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| 29. | the fat of the land, the best or richest of anything obtainable: to live on the fat of the land. |

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fat (fāt)
n.
Any of various soft, solid, or semisolid organic compounds constituting the esters of glycerol and fatty acids and their associated organic groups.
A mixture of such compounds occurring widely in organic tissue, especially in the adipose tissue of animals and in the seeds, nuts, and fruits of plants.
Adipose tissue.
Obesity; corpulence.
| fat (fāt) Pronunciation Key
Any of a large number of oily compounds that are widely found in plant and animal tissues and serve mainly as a reserve source of energy. In mammals, fat, or adipose tissue, is deposited beneath the skin and around the internal organs, where it also protects and insulates against heat loss. Fat is a necessary, efficient source of energy. An ounce of fat contains more than twice as much stored energy as does an ounce of protein or carbohydrates and is digested more slowly, resulting in the sensation of satiety after eating. It also enhances the taste, aroma, and texture of food. Fats are made chiefly of triglycerides, each molecule of which contains three fatty acids. Dietary fat supplies humans with essential fatty acids, such as linoleic acid and linolenic acid. Fat also regulates cholesterol metabolism and is a precursor of prostaglandins. See more at saturated fat, unsaturated fat. |
fat chance
Very little or no possibility, as in A fact chance he has of coming in first, or You think they'll get married? Fat chance! A related expression is a fat lot, meaning "very little or none at all," as in A fat lot of good it will do her. The first of these slangy sarcastic usages dates from the early 1900s, the second from the 1890s.