breast (br?st)n.1. a. Either of two milk-secreting, glandular organs on the chest of a woman; the female mammary gland.b. A corresponding rudimentary gland in a human male, especially when enlarged by exposure to estrogen or appearing to be enlarged by overlying body fat.2. a. The superior ventral surface of the human body, extending from the neck to the abdomen.b. A corresponding part in other animals.c. A cut of meat taken from this part of an animal, especially from poultry.d. The part of a garment that covers the chest.e. The seat of affection and emotion: “Griefs of mine own lie heavy in my breast” (Shakespeare).3. Something likened to the human breast, as in being in round or broad: the breast of a hill; the breast of the sea.4. The face of a mine or tunnel.5. Sports Breaststroke.tr.v. breast·ed, breast·ing, breasts 1. To go to the top of; ascend: “He breasted a rise and looked down. He was at the head of a small valley” (Ken Follett).2. To move forward or advance through or across: breasted the current; breasted the crowd.3. To confront or deal with resolutely: breasted a storm of criticism.[Middle English brest, from Old English br?ost.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.breast (br?st) n1. (Anatomy) the front part of the body from the neck to the abdomen; chest2. (Anatomy) either of the two soft fleshy milk-secreting glands on the chest in sexually mature human females. 3. (Zoology) a similar organ in certain other mammals4. anything that resembles a breast in shape or position: the breast of the hill. 5. a source of nourishment: the city took the victims to its breast. 6. the source of human emotions7. (Clothing & Fashion) the part of a garment that covers the breast8. (Architecture) a projection from the side of a wall, esp that formed by a chimney9. (Mining & Quarrying) mining the face being worked at the end of a tunnel10. beat one’s breast to display guilt and remorse publicly or ostentatiously11. make a clean breast of to make a confession ofvb (tr) 12. to confront boldly; face: breast the storm. 13. to oppose with the breast or meet at breast level: breasting the waves. 14. to come alongside of: breast the ship. 15. to reach the summit of: breasting the mountain top. [Old English br?ost; related to Old Norse brj?st, Old High German brust, Dutch borst, Swedish bräss, Old Irish br? belly, body]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014breast (br?st) n. 1. either of the pair of mammae occurring on the chest of human beings and other primates, esp. of the female after pubertal development. 2. the outer, front part of the body from neck to midsection; chest. 3. the bosom conceived of as the center of emotion. 4. a projection from a wall, as part of a chimney. 5. any surface or part resembling or likened to the human breast. 6. face (def. 18). v.t. 7. to meet or oppose boldly; confront: to breast hostile criticism. 8. to contend with or advance against: The ship breasted the turbulent seas. 9. to climb or climb over (a mountain, obstacle, etc.). [before 1000; Middle English; Old English br?ost; c. Old Saxon briost, Old Norse brj?st] breast?less, adj. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.breast (br?st) An organ of female primates that contains milk-producing glands and usually occurs in pairs. It is present but undeveloped in the male.The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.breast – bust – bosom1. ‘breast’A woman’s breasts are the two soft, round pieces of flesh on her chest that can produce milk to feed a baby.A woman’s breasts can be referred to as her bust, especially when you are talking about their size. Note that bust refers to both breasts together. You do not talk about a woman’s ‘busts’.Bust is also used to talk about the measurement around the top part of a woman’s body at the level of her breasts.A woman’s breasts can also be referred to as her bosom /’b?z?m/. This is an old-fashioned or literary word.