What is the meaning of strike out?

verb

• Remove from a list.
  • usage: "Cross the name of the dead person off the list"
  • synonyms: cross off, cross out, strike off, mark
• Put out or be put out by a strikeout.
  • usage: "Oral struck out three batters to close the inning"
• Be unsuccessful in an endeavor.
  • usage: "The candidate struck out with his health care plan"
• Make a motion as with one's fist or foot towards an object or away from one's body.
• Cause to get out.
  • usage: "The pitcher retired three batters"; "the runner was put out at third base"
  • synonyms: retire
• Set out on a course of action.
  • usage: "He struck out on his own"