Webster's Revised Unabridged Dictionary · 1913

Opening

Opening , noun

1.
The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.
The opening of your glory was like that of light. — Dryden
2.
A place which is open; a breach; an aperture; a gap; cleft, or hole.
We saw him at the opening of his tent. — Shakespeare
3.
An opportunity; as, an opening for business. [Colloquial] — Dickens
4.
A vacant place; a job which does not have a current occupant; as, they are now interviewing candidates for the two openings in the department.
5.
A thinly wooded space, without undergrowth, in the midst of a forest; a clearing; as, oak openings. [United States] — Cooper