"A snowball is a spherical object made from snow, usually created by scooping snow with the hands, and pressing the snow together to compact it into ...
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a ball. Snowballs are often used in games such as snowball fights.
A snowball may also be a large ball of snow formed by rolling a smaller snowball on a snow-covered surface. The smaller snowball grows by picking up additional snow as it rolls. The terms "snowball effect" and "snowballing" are derived from this process. The Welsh dance "Y Gasseg Eira" also takes its name from an analogy with rolling a large snowball. This method of forming a large snowball is often used to create the sections needed to build a snowman." - (en.wikipedia.org 24.01.2022)
