Noun

1. An opening in anything made by breaking or parting

   a gap in a fence

   He made a gap by kicking a weak spot.

2. An opening allowing passage or entrance

   We can slip through that gap.

3. An opening that implies a breach or defect

   There is a gap between the roof and the gutter.

4. A vacant space or time

   I have a gap in my schedule next Tuesday.

5. A hiatus.

   I'm taking a gap.

6. A mountain or hill pass.

   The exploring party went through the high gap in the mountains.

7. a sheltered area of coast between two cliffs (mostly restricted to place names).

   At Birling Gap we can stop and go have a picnic on the beach.

8. The regions between the outfielders.

   Jones doubled through the gap.

Synonyms

• (opening made by breaking or parting): break, hole, rip, split, tear, rift, chasm, fissure
• (opening allowing passage or entrance): break, clearing, hole, opening
• (opening that implies a breach or defect): space
• (vacant space or time): window
• (hiatus): hiatus
• (mountain pass): col, neck, pass
• (in baseball):

Verb

1. To notch, as a sword or knife.
2. To make an opening in; to breach.
3. To check the size of a gap.

   I gapped all the sparkplugs in my car then realized I used the wrong manual and had made them too small.