A completely shallow coral reef adjacent to a coast.
A sheltered area of coast between two cliffs (mostly restricted to place names).
A vacancy, deficit, absence, or lack.
The shortfall between the amount the medical insurer will pay to the service provider and the scheduled fee for the item.
An opening in anything made by breaking or parting.
A hiatus, a pause in something which is otherwise continuous.
An opening allowing passage or entrance.
An opening that implies a breach or defect.
(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.
The regions between the outfielders.
A vacant space or time.
A mountain or hill pass.
To leave suddenly.
To notch, as a sword or knife.
To check the size of a gap.
To make an opening in; to breach.