
1) Changing pitch 2) Classroom missile 3) Diamond offense 4) Illegal pitch 5) It uses liquid from a pitcher 6) It will get a pitcher ejected 7) Missile 8) Outlawed baseball pitch 9) Projectile 10) Wet missile
Found on
https://www.crosswordclues.com/clue/spitball

1) Pellet 2) Projectile 3) Wad
Found on
https://www.crosswordclues.com/clue/spitball

A spitball is a (now illegal) baseball pitch, in which the ball has been altered by the application of saliva, petroleum jelly, or some other foreign substance. This technique alters the wind-resistance and weight on one side of the ball, causing it to move in an atypical manner. It may also cause the ball to `slip` out of the pitcher`s fingers......
Found on
http://en.wikipedia.org/wiki/Spitball
[prank] A spitball is a piece of paper, moistened with saliva (by chewing) and shot through a drinking straw. ...
Found on
http://en.wikipedia.org/wiki/Spitball_(prank)

• (n.) Paper chewed, and rolled into a ball, to be thrown as a missile.
Found on
http://thinkexist.com/dictionary/meaning/spitball/

(from the article `baseball`) ...barrage. But increasing the size of the plate in 1900, counting the first two foul balls as strikes (adopted by the National League in 1901 and ... In the early days of organized baseball, artificial aids were allowed that enabled the pitcher to throw what was called a spitball. Simple saliva, ... [2 ...
Found on
http://www.britannica.com/eb/a-z/s/142
Spit'ball` noun Paper chewed, and rolled into a ball, to be thrown as a missile.
Found on
http://www.encyclo.co.uk/webster/S/167

Spitball is American slang for a half-hearted accusation, a spiteful but feeble attack.
Found on
http://www.probertencyclopaedia.com/browse/ZSD.HTM

[
n] - a projectile made by chewing a piece of paper and shaping it into a sphere 2. [n] - an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws it
Found on
http://www.webdictionary.co.uk/definition.php?query=spitball

An illegal baseball pitch that involves the application of spit
Found on
https://coachingkidz.com/baseball-terminology-the-ultimate-guide-to-terms-u

American slang for a half-hearted accusation, a spiteful but feeble attack.
Found on
https://www.easypacelearning.com/english-books/slang-words-a-to-z/375-slang
spitter noun an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws it
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.