From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( n.) A place which is open; a breach; an aperture; a gap; cleft, or hole.

(2): ( n.) A thinly wooded space, without undergrowth, in the midst of a forest; as, oak openings.

(3): ( n.) Hence: A vacant place; an opportunity; as, an opening for business.

(4): ( n.) The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.

(5): ( p. pr. & vb. n.) of Open

King James Dictionary [2]

Opening, ppr. o'pning. Unclosing unsealing uncovering revealing interpreting.

Opening, n. o'pning.

1. A breach an aperture a hole or perforation. 2. A place admitting entrance as a bay or creek. 3. Dawn first appearance or visibleness beginning of exhibition or discovery.

The opening of your glory was like that of light.