What's a "jargon"? Watch
A jargon buster is a guide that tells you the meanings of these words
Or a "jargon buster". I hear it everywhere but I don't know what it means!
A jargon buster is just a glossary of terms eg
QFE = the altimeter pressure setting to measure height above a specific ground level.
Most jobs, sports, hobbies etc have their own jargon.