An illegal pitch is a type of pitch in baseball that does not conform to the rules of the game. The two crossword solutions for this term are 'spitter' (7 letters) and 'SPITBALL' (8 letters). A spitter is a type of illegal pitch where the pitcher intentionally spits on the ball to make it move differently than a regular pitch. A SPITBALL is a type of illegal pitch where the pitcher applies a foreign substance, such as saliva or petroleum jelly, to the ball to make it move differently than a regular pitch.