From WordNet (r) 3.0 (2006):
gap
n 1: a conspicuous disparity or difference as between two
figures; "gap between income and outgo"; "the spread
between lending and borrowing costs" [syn: gap, spread]
2: 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" [syn: opening, gap]
3: a narrow opening; "he opened the window a crack" [syn: gap,
crack]
4: a pass between mountain peaks [syn: col, gap]
5: a difference (especially an unfortunate difference) between
two opinions or two views or two situations
6: an act of delaying or interrupting the continuity; "it was
presented without commercial breaks"; "there was a gap in his
account" [syn: break, interruption, disruption, gap]
v 1: make an opening or gap in [syn: gap, breach]