Dictionary

To make something accessible or allow for passage by moving from a shut position.

Example: Turn the doorknob to open the door.

To make (an open space, etc.) by clearing away an obstacle or obstacles, in order to allow for passage, access, or visibility.

Example: He opened a path through the undergrowth.

To bring up, broach.

Example: I don't want to open that subject.

To enter upon, begin.

Example: to open a case in court, or a meeting

(with the) Open or unobstructed space; an exposed location.

Example: I can't believe you left the lawnmower out in the open when you knew it was going to rain this afternoon!

(with the) Public knowledge or scrutiny; full view.

Example: We have got to bring this company's corrupt business practices into the open.

A defect in an electrical circuit preventing current from flowing.

Example: The electrician found the open in the circuit after a few minutes of testing.

A sports event in which anybody can compete

Example: the Australian Open