What is the meaning of gap?

noun

• A conspicuous disparity or difference as between two figures.
  • usage: "gap between income and outgo"; "the spread between lending and borrowing costs"
  • synonyms: spread
• An open or empty space in or between things.
  • usage: "there was a small opening between the trees"; "the explosion made a gap in the wall"
  • synonyms: opening
• A narrow opening.
  • usage: "he opened the window a crack"
  • synonyms: crack
• A pass between mountain peaks.
  • synonyms: col
• A difference (especially an unfortunate difference) between two opinions or two views or two situations.
• An act of delaying or interrupting the continuity.
  • usage: "it was presented without commercial breaks"; "there was a gap in his account"
  • synonyms: break, interruption, disruption

verb

• Make an opening or gap in.
  • synonyms: breach