snowball UK /ˈsnəʊbɔːl/US /ˈsnoʊbɔl/noun 6verb 4adjective 1forms 3phrases 2 noun6 •A ball of snow, usually one made in the hand and thrown for amusement in a snowball fight; also a larger ball of snow made by rolling a snowball around in snow that sticks to it and increases its diameter. •(figurative) Something that snowballs (grows rapidly out of control).Representatives of the small airlines that felt betrayed by Brown's policy started a political snowball rolling, resulting in the Airmail Act of 1934... — 2005 •(US) A type of ice dessert: a snow cone. •A cocktail made from lemonade and advocaat. •A small cake, typically cream-filled and covered in chocolate icing and desiccated coconut.It didn't take long to eat a packetful of snowballs — they are simply delicious. •(slang) A sex act involving passing ejaculated semen from one person's mouth to another's. verb4 •To play at throwing snowballs. •(figurative) To rapidly grow out of proportion or control, from an initially smaller state.The high unemployment rates quickly snowballed into a major budget problem for the government. •To pelt with snowballs; to throw snowballs at. •(slang, vulgar) To receive ejaculated semen in one's mouth, and to then pass it back and forth between one’s mouth and another person’s mouth. adjective1 •Of something with rapid growth, often uncontrolled. Compare snowball effect.Scandal, with her, did not lose any of its usual snowball propensities, of gathering as it went. — 1837 formssnowballed · snowballing · snowballs Phrases with snowball snowball effectAn accelerating growth of magnitude, including fame, fortune, importance, or danger. snowball in hellSomething that is doomed.