Meaning

• An opening in anything made by breaking or parting.

  "He made a gap in the fence by kicking at a weak spot."

• An opening allowing passage or entrance.

  "We can slip through that gap between the buildings."

• An opening that implies a breach or defect.

  "There is a gap between the roof and the gutter."

• A vacant space or time.

  "I have a gap in my schedule next Tuesday."

• A hiatus, a pause in something which is otherwise continuous.

  "I'm taking a gap."

• A vacancy, deficit, absence, or lack.

  "Find words to fill the gaps in an incomplete sentence."

• A mountain or hill pass.

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

• 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."

• The regions between the outfielders.

  "Jones doubled through the gap."

• (for a medical or pharmacy item) The shortfall between the amount the medical insurer will pay to the service provider and the scheduled fee for the item.

• (usually written as "the gap") The disparity between the indigenous and non-indigenous communities with regard to life expectancy, education, health, etc.

• An unsequenced region in a sequence alignment.

Meaning

• To notch, as a sword or knife.

• To make an opening in; to breach.

• To check the size of a gap.

  "I gapped all the spark plugs in my car, but then realized I had used the wrong manual and had made them too small."

• To leave suddenly.