What is the meaning of handicap?

noun

• The condition of being unable to perform as a consequence of physical or mental unfitness.
  • usage: "reading disability"; "hearing impairment"
  • synonyms: disability, disablement, impairment
• Advantage given to a competitor to equalize chances of winning.
• Something immaterial that interferes with or delays action or progress.
  • synonyms: hindrance, hinderance, deterrent, impediment, balk, baulk, check

verb

• Injure permanently.
  • usage: "He was disabled in a car accident"
  • synonyms: disable, invalid, incapacitate
• Attempt to forecast the winner (especially in a horse race) and assign odds for or against a contestant.
• Put at a disadvantage.
  • usage: "The brace I have to wear is hindering my movements"
  • synonyms: hinder, hamper