A space between objects or points; an aperture, A problematic situation resulting from such a disparity, A break or opening, as in a fence, a wall, or the like; a breach; a chasm; a way of passage, as between rocks or through a mountain; a vacant space, transitive verb_ To notch, as a sword or knife, To make an opening in; to breach, verb_ To check the size of a gap, make an opening or gap in