Dictionary.net

the first of a series of actions; "he memorized all the important chess openings"

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

the act of opening something; "the ray of light revealed his cautious opening of the door"

a possible alternative; "bankruptcy is always a possibility"

the initial part of the introduction; "the opening established the basic theme"

a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door"

a ceremony accompanying the start of some enterprise

the first of a series of actions; "he memorized all the important chess openings"

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

the act of opening something; "the ray of light revealed his cautious opening of the door"

a vacant or unobstructed space; "they left a small opening for the cat at the bottom of the door"

a possible alternative; "bankruptcy is always a possibility"

the initial part of the introduction; "the opening established the basic theme"

of Open

The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.

A place which is open; a breach; an aperture; a gap; cleft, or hole.

Hence: A vacant place; an opportunity; as, an opening for business.

A thinly wooded space, without undergrowth, in the midst of a forest; as, oak openings.

of Open

The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.

A place which is open; a breach; an aperture; a gap; cleft, or hole.

Hence: A vacant place; an opportunity; as, an opening for business.

A thinly wooded space, without undergrowth, in the midst of a forest; as, oak openings.

An aperture, or a hole; as, an opening in a fence; a space in a woods where there are few trees and little undergrowth; the first steps; beginning; as, the opening of a trial; opportunity or chance.

First in order.

An open place: a breach: an aperture: beginning: first appearance: opportunity.

An aperture; beginning.

The act of laying open (e. g. by making an incision or puncture); also the act of breaking an electrical current.

An orifice, a gap, a perforation. See aperture, apertura, foramen, ostium, and their subheadings.

n. A place which is open ; a breach ; an aperture ;- beginning; commencement.