What is the meaning of Snowball?

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.

A cocktail made from lemonade and advocaat.

Something that snowballs (grows rapidly out of control).

A sex act involving passing ejaculated semen from one person's mouth to another's.

A type of ice dessert.

A small cake, typically cream-filled and covered in chocolate icing and desiccated coconut.

Of something with rapid growth, often uncontrolled. Compare snowball effect.

To rapidly grow out of proportion or control.

To play at throwing snowballs.

To pelt with snowballs; to throw snowballs at.

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.

Source: wiktionary.org