#1 gap n. [spread] a conspicuous disparity or difference as between two figures; "gap between income and outgo"; "the spread between lending and borrowing costs". wn
#2 gap n. [opening] an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall". wn
#3 gap n. [crack] a narrow opening; "he opened the window a crack". wn
#4 gap v. [breach] make an opening or gap in. wn
#5 gap n. [col] a pass between mountain peaks. wn
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