1937, in the meaning defined above
dump entry 1 + -ster (originally in the trademarked name Dempster Dumpster, applied to mechanically loaded refuse containers produced by the Dempster Brothers Company of Knoxville, Tennessee)
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Cite this Entry
“Dumpster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dumpster. Accessed 3 Jul. 2022.
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