close the gap

: to move so as to bar passage through something

: to block against entry or passage

: to deny access to

: a coming or bringing to a conclusion

: a conclusion or end in time or existence : cessation

: the concluding passage (as of a speech or play)

: an enclosed area

: the precinct (see precinct 2a) of a cathedral

: a narrow passage leading from a street to a court and the houses within or to the common stairway of tenements

: having no openings : closed

: confined or carefully guarded

: high

: in a close position or manner

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

: an assailable position

: a mountain pass

: to make an opening in

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

: to fall or stand open