Definitions from Wiktionary (Snowball)

▸ noun:  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.
▸ noun:  A cocktail made from lemonade and advocaat.
▸ noun:  (figuratively) Something that snowballs (grows rapidly out of control).
▸ noun:  (sex) A sex act involving passing ejaculated semen from one person's mouth to another's.
▸ noun:  (US) A type of ice dessert.
▸ noun:  A small cake, typically cream-filled and covered in chocolate icing and desiccated coconut.
▸ adjective:  Of something with rapid growth, often uncontrolled. Compare snowball effect.
▸ verb:  (intransitive) To rapidly grow out of proportion or control, from an initially smaller state.
▸ verb:  (intransitive) To play at throwing snowballs.
▸ verb:  (transitive) To pelt with snowballs; to throw snowballs at.
▸ verb:  (intransitive, slang) 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.
▸ noun:  A surname transferred from the nickname.

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