opening

The definition of an opening is the first part in a series, a hole, or an opportunity.

(noun)

An example of an opening is the first round of credits that come up at the beginning of a movie.
An example of an opening is a hole through a wall.
An example of an opening is a job for a web designer that is advertised on Craig's List.

See opening in Webster's New World College Dictionary

noun

a becoming open or causing to be open
an open place or part; hole; gap; aperture
☆ a clearing in the midst of a wooded area
1. a beginning; first part; commencement
2. start of operations; formal beginning
3. a first performance, as of a play
a favorable chance or occasion; opportunity
an unfilled position or office for which a person is wanted
Chess, Checkers the series of moves at the beginning of a game, often a specific, conventional sequence of moves

Origin: ME openyng

adjective

initial or introductory: opening remarks

See opening in American Heritage Dictionary 4

noun

The act or an instance of becoming open or being made to open.
An open space serving as a passage or gap.
A breach or aperture.
A clearing in the woods.
The first part or stage, as of a book.
The first performance: the opening of a play.
A formal commencement of operation: attended the opening of the new museum.
Games A specific pattern or series of beginning moves in certain games, especially chess.
An opportunity affording a chance of success. See Synonyms at opportunity.
An unfilled job or position; a vacancy.