breast, bosom, knocker, boob, tit, titty

either of two soft fleshy milk-secreting glandular organs on the chest of a woman

• mammary gland, mamma — milk-secreting organ of female mammals

• lactiferous duct — ducts of the mammary gland that carry milk to the nipple
• areola, ring of color — small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite

• adult female body, woman's body — the body of an adult woman