p. pr. & vb. n. - of Open
n. - The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.
n. - A place which is open; a breach; an aperture; a gap; cleft, or hole.
n. - Hence: A vacant place; an opportunity; as, an opening for business.
n. - A thinly wooded space, without undergrowth, in the midst of a forest; as, oak openings.