What is the meaning of opening?

noun

• 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: gap
• A ceremony accompanying the start of some enterprise.
• Becoming open or being made open.
  • usage: "the opening of his arms was the sign I was waiting for"
• The first performance (as of a theatrical production. )
  • usage: "the opening received good critical reviews"
  • synonyms: opening night, curtain raising
• The act of opening something.
  • usage: "the ray of light revealed his cautious opening of the door"
• Opportunity especially for employment or promotion.
  • usage: "there is an opening in the sales department"
• The initial part of the introduction.
  • usage: "the opening established the basic theme"
• A possible alternative.
  • usage: "bankruptcy is always a possibility"
  • synonyms: possibility, possible action
• An aperture or hole that opens into a bodily cavity.
  • usage: "the orifice into the aorta from the lower left chamber of the heart"
  • synonyms: orifice, porta
• A vacant or unobstructed space that is man-made.
  • usage: "they left a small opening for the cat at the bottom of the door"
• An entrance equipped with a hatch; especially a passageway between decks of a ship.
  • synonyms: hatchway, scuttle
• A recognized sequence of moves at the beginning of a game of chess.
  • usage: "he memorized all the important chess openings"
  • synonyms: chess opening
• The first of a series of actions.
  • synonyms: first step, initiative, opening move

verb

• Cause to open or to become open.
  • usage: "Mary opened the car door"
  • synonyms: open, open up
• Start to operate or function or cause to start operating or functioning.
  • usage: "open a business"
  • synonyms: open, open up
• Become open.
  • usage: "The door opened"
  • synonyms: open, open up
• Begin or set in action, of meetings, speeches, recitals, etc..
  • usage: "He opened the meeting with a long speech"
  • synonyms: open
• Spread out or open from a closed or folded state.
  • usage: "open the map"; "spread your arms"
  • synonyms: unfold, spread, spread out, open
• Make available.
  • usage: "This opens up new possibilities"
  • synonyms: open, open up
• Become available.
  • usage: "an opportunity opened up"
  • synonyms: open, open up
• Have an opening or passage or outlet.
  • usage: "The bedrooms open into the hall"
  • synonyms: open
• Make the opening move.
  • usage: "Kasparov opened with a standard opening"
  • synonyms: open
• Afford access to.
  • usage: "the door opens to the patio"; "The French doors give onto a terrace"
  • synonyms: afford, open, give
• Display the contents of a file or start an application as on a computer.
  • synonyms: open

adjective

• First or beginning.
  • usage: "the memorable opening bars of Beethoven's Fifth"; "the play's opening scene"