2.nounA temporary measure or short-term fix used until something better can be obtained; that which serves as an expedient in an emergency; a band-aid solution.
"The small company uses their old product with a few kludged enhancements as a stopgap until they can develop a new product."
3.adjectiveFilling a gap or pause.
4.adjectiveTemporary; short-term.
"They put a stopgap solution in place, but need something more permanent."