Quick definitions from WordNet (gap)
▸ noun: a narrow opening
▸ noun: a conspicuous disparity or difference as between two figures ("Gap between income and outgo")
▸ noun: a pass between mountain peaks
▸ noun: an open or empty space in or between things ("The explosion made a gap in the wall")
▸ noun: an act of delaying or interrupting the continuity
▸ verb: make an opening or gap in
▸ Also see gap
▸ noun: a narrow opening
▸ noun: a conspicuous disparity or difference as between two figures ("Gap between income and outgo")
▸ noun: a pass between mountain peaks
▸ noun: an open or empty space in or between things ("The explosion made a gap in the wall")
▸ noun: an act of delaying or interrupting the continuity
▸ verb: make an opening or gap in
▸ Also see gap