(Australia, 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.
(Australia) (usually written as "the gap") The disparity between the indigenous and non-indigenous communities with regard to life expectancy, education, health, etc.
(genetics) An unsequenced region in a sequence alignment.
“The youth would sneak through a gap in the hedge and congregate at the park after-hours.”
“There has always been a two-week gap between the two tournaments.”
“The tales served to unite the community and help bridge a gap in their understanding of social problems.”
gapping
(linguistics) A type of ellipsis that occurs in the non-initial conjuncts of coordinate structures, and usually elidesminimally a finite verb and further any non-finite verbs that are present. Example: "Some ate bread, and others rice."