Gap

1. An opening in anything made by breaking or parting. There was a gap in the fence.
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 this week.
5. A mountain or hill pass. We hiked through the gap in the mountains.
6. (baseball) The region between the outfielders. He hit through the gap in the infield.
7. To make an opening in. They need to make a gap in the trees for a road.
8. To check the size of a gap. I had to gap the sparkplugs.