gap

/ˈgap/

Middle English gap, gappe, borrowed from Old Norse gap "chasm, outcry," noun derivative of gapa "to "

noun

  1. a break in a barrier (such as a wall, hedge, or line of military defense)

  2. an assailable position

  3. a mountain pass

verb

  1. to make an opening in

  2. to adjust the space between the electrodes of (a spark plug)

  3. to fall or stand open

noun

  1. an area of contact between adjacent cells characterized by modification of the plasma membranes for intercellular communication or transfer of low molecular-weight substances