Etymology
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Rohypnol (n.)
1995, trade name for a powerful insomnia drug.
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Oxo 

trade name of a brand of beef extract, 1899, British, from ox.

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Kiwanis 
businessmen's and professionals' society, formed in Detroit, Michigan, U.S., in 1915, the meaning and etymology of the name is obscure; early accounts of the clubs claim it is an Indian word meaning "barter, trade."
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Ambien 
trade name for prescription medication Zolpidem, which is used to treat insomnia, registered 1993 in U.S., no doubt suggested by ambient or words like it in French.
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Perspex 
1935, trade name in Britain for what in the U.S. is called Plexiglas or Lucite, irregularly formed from Latin perspect-, past participle stem of perspicere "look through, look closely at" (see perspective).
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Tylenol (n.)
introduced 1955 as the name of an elixir for children, trade name originally registered by McNeil Laboratories, Philadelphia, Pa., from elements abstracted from N-acetyl-para-aminophenol, the chemical name of its active compound.
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Luminal (n.)
trade name of phenobarbitone, used as a sedative and hypnotic, coined 1912 in German from Latin lumen "light" (from suffixed form of PIE root *leuk- "light, brightness") + -al (3), "the root here being used, very irregularly, as an equivalent of pheno-" [Flood].
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Macassar (adj.)

name of a district on the island of Celebes (modern Sulawesi), 1660s, from native Mangkasara. Especially in Macassar oil (1809), trade name of a hair tonic "grandiloquently advertised in the early part of the 19th century" [OED] and said to be made from materials obtained from Macassar.

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Benzedrine (n.)
trade name of a type of amphetamine, 1933, registered as a proprietary name 1935 by Smith, Kline & French Laboratories, from benzoic (see benzene) + chemical suffix -edrine from ephedrine, etc. It is a carbonate of benzyl-methyl-carbinamine. Slang shortening benny first attested 1955.
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Ottawa 
Canadian capital, founded 1827 as Bytown, named for English officer John By, who oversaw construction of the canal there; renamed 1854, when it became capital, for the Ottawa River, which took its name from the Algonquian people who lived in Michigan and Ontario. Their name is said to be from adawe "to trade."
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