An act or instance of beginning.
The first few measures of a musical composition.
The first performance of a show or play by a particular troupe.
A gap permitting passage through.
The initial period when a show at an art gallery or museum is first opened, especially the first evening.
A vacant position, especially in an array.
An unoccupied employment position.
In mathematical morphology, the dilation of the erosion of a set.
An act or instance of making or becoming open.
A time available in a schedule.
An opportunity, as in a competitive activity.
The first few moves in a game.
Pertaining to the start or beginning of a series of events.
describing the first period of play, usually up to the fall of the first wicket; describing a batsman who opens the innings or a bowler who opens the attack
The beginning or introductory portion that comes before the main text of a document or book.
An introduction, or series of preliminary remarks.
A title or epithet.
The prelude or introduction to the canon of the Mass.
To give a preface to.
To introduce or make a comment before (the main point).