[snow.ball] n (15c) 1 a: a round mass of snow pressed or rolled together b: shaved ice molded into a ball and flavored with a syrup
2: any of several cultivated shrubs (genus Viburnum) with clusters of white sterile flowers--called also snowball bush
[2]snowball vt (1854) 1: to throw snowballs at
2: to cause to increase or multiply at a rapidly accelerating rate ~ vi 1: to engage in throwing snowballs
2: to increase, accumulate, expand, or multiply at a rapidly accelerating rate