n. 1 an unfilled space or interval; a blank; a break in continuity. 2 a breach in a hedge, fence, or wall. 3 a wide (usu. undesirable) divergence in views, sympathies, development, etc. (generation gap). 4 a gorge or pass. fill (or close etc.) a gap make up a deficiency. gap-toothed having gaps between the teeth. gapped adj. gappy adj.
[ ME f. ON, = chasm, rel. to GAPE ]