gap

n. 1 empty space, interval; deficiency. 2 breach in a hedge, fence, etc. 3 wide divergence in views etc.  gappy adj. [old norse]

n. An opening in anything made by breaking or parting; as, a gap in a fence; an opening for a passage or entrance; an opening which implies a breach or defect; a vacant space or time; a hiatus; a mountain pass.