Spitball

['spɪtbɔːl] or ['spɪt,bɔl]

(noun.) an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws it.

(noun.) a projectile made by chewing a piece of paper and shaping it into a sphere.

Checked by Emma--From WordNet

(n.) Paper chewed, and rolled into a ball, to be thrown as a missile.

Edited by Kathleen