Dumpster n.

early 14c., "throw down or fall with force, drop (something or someone) suddenly," not found in Old English, perhaps from a Scandinavian source (compare Danish dumpe "fall hard," Norwegian dumpa "to fall suddenly," Old Norse dumpa "to beat").

The sense of "unload en masse, cause to fall out by tilting up a cart, etc." is recorded in American English by 1784. That of "discard, abandon" is from 1919. Economics sense of "export or throw on the market in large quantities at low prices" is by 1868. Related: Dumped; dumping. Dumping ground is by 1842.

Old English deman "to judge, decide on consideration, condemn;, think, judge, hold as an opinion," from Proto-Germanic *domjanan(source also of Old Frisian dema"to judge," Old Saxon adomian, Middle Dutch doemen, Old Norse dma, Old High German tuomen, Gothic domjan "to deem, judge"), denominative of *domaz, from PIE root *dhe- "to set, put" (compare doom). Related: Deemed; deeming. Originally "to pronounce judgment" as well as "to form an opinion." Compare Old English, Middle English deemer "a judge." The two judges of the Isle of Man were called deemsters in 17c., a title formerly common throughout England and Scotland and preserved in the surname Dempster.