STRIKE OUT

v. 1. To destroy something that has been written or drawn by drawing a line or cross through it or by erasing it. John misspelled "corollary. " He struck it out and wrote it correctly. 2. To begin to follow a new path or a course of action that you have never tried. The boy scouts struck out at daybreak over the mountain pass. John quit his job and struck out on his own as a traveling salesman. 3. To put (a batter) out of play by making him miss the ball three times; also: To be put out of play by missing the ball three times. The pitcher struck out three men in the game. The batter struck out twice. 4. To push out an arm suddenly in a hitting motion. The boxer saw his chance and struck out at his opponent's jaw.