An act or instance of making or becoming open.
Something that is open.
An act or instance of beginning.
Something that is a beginning.
A vacant position, especially in an array.
An opportunity, as in a competitive activity.
In mathematical morphology, the dilation of the erosion of a set.
To make something accessible or allow for passage by moving from a shut position.
To make (an open space, etc.) by clearing away an obstacle or obstacles, in order to allow for passage, access, or visibility.
To bring up, broach.
To enter upon, begin.
To spread; to expand into an open or loose position.
To make accessible to customers or clients.
To start (a campaign).
To become open.
To begin conducting business.
To begin a side's innings as one of the first two batsmen.
To bet before any other player has in a particular betting round in a game of poker.
To reveal one's hand.
(of a file, document, etc.) To load into memory for viewing or editing.
To disclose; to reveal; to interpret; to explain.
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