Definition of Opening

Noun

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

Adjective

• first or beginning
  "the memorable opening bars of Beethoven's Fifth"
  "the play's opening scene"
  

• Scrabble® score of the opening (10)
• Word Chums® score of the opening (14)
• Words With Friends® score of the opening (14)