spitball

A piece of paper chewed and shaped into a lump for use as a projectile.

An illegal pitch in which a foreign substance, such as saliva, is applied to the ball before it is thrown.

Paper chewed and made into a ball to be used as a missile.

Paper chewed, and rolled into a ball, to be thrown as a missile; — a childish prank.

A pitched ball in throwing which the pitcher grips the ball between two, or three, fingers on one side (which is made slippery, as by saliva) and the thumb on the other side, and delivers it so that it slips off the fingers with the least possible friction; — also called spitter. When pitched directly overhand a spit ball darts downward, when pitched with the arm extended sidewise it darts down and out. The use of such a pitch is against the rules of professional baseball.

A pitch of a baseball that has been partly covered with saliva, illegal at most levels.

A balled up piece of paper, moistened with saliva (by chewing) and shot through a drinking straw.

To brainstorm ideas.

a projectile made by chewing a piece of paper and shaping it into a sphere

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