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).

Representatives of the small airlines that felt betrayed by Brown's policy started a political snowball rolling, resulting in the Airmail Act of 1934...

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

A type of ice dessert: a snow cone.

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.

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.

There's a further knock-on effect from cancelling trains. It's not unusual for train crew diagrams to include a period 'on the cushions', travelling as a passenger to get staff from one train to the next. Cancel this train and it's likely the crew won't reach their next train, so this too is cancelled. Disruption snowballs and diagrams become harder to deliver.

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.