Gap

·vt To notch, as a sword or knife.

II. Gap ·vt To make an opening in; to Breach.

III. Gap ·add. ·noun The vertical distance between two superposed surfaces, ·esp. in a biplane.

IV. Gap ·noun An opening in anything made by breaking or parting; as, a gap in a fence; an opening for a passage or entrance; an opening which implies a breach or defect; a vacant space or time; a hiatus; a mountain pass.