The Dumpster was invented in Knoxville Tennesee by the Dempster brothers. The original name was the Dempster Dumpster. The Dempster-Dumpster system is a way of mechanically loading the contents of standardized containers onto garbage trucks. The Dempster Dumpmaster, was the first successful front-loading garbage truck, which really brought the word into everyday language.
A dumpster is a large steel waste receptacle designed to be emptied into garbage trucks. The word is a trademark of Dumpster, an American brand name for a type of mobile garbage bin.
Dumpster diving involves people voluntarily climbing into a dumpster to find valuables, or useful items, including food and used clothing.