n. 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.n. Specifically A deep sloping ravine, notch, or cleft cutting a mountain-ridge.n. In general, any hiatus, breach, or interruption of consecutiveness or continuity: as, a gap in an argument.n. See the extract, and break-lathe.To notch or jag; cut into teeth like those of a saw.To make a break or opening in, as a fence, a wall, or any mass of matter.To cause a hiatus of any kind in; cause to lose consecutiveness or continuity.