rainbow

From Middle English reinbowe, reinboȝe, from Old English reġnboga (“rainbow”), from Proto-Germanic *regnabugô (“rainbow”), equivalent to rain +‎ bow (“arch”). Cognate with West Frisian reinbôge (“rainbow”), Dutch regenboog (“rainbow”), German Regenbogen (“rainbow”), Danish regnbue (“rainbow”), Swedish regnbåge (“rainbow”), Icelandic regnbogi (“rainbow”).

• (General American) IPA^(key): /ˈɹeɪnboʊ/, /ˈɹeɪmboʊ/; enPR: rān'bō, rām'bō
• (Received Pronunciation) IPA^(key): /ˈɹeɪnbəʊ/

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rainbow (plural rainbows)

1. A multicoloured arch in the sky, produced by prismatic refraction of light within droplets of rain in the air.
2. Any prismatic refraction of light showing a spectrum of colours.
3. (often used with “of”) A wide assortment; a varied multitude.

   a rainbow of possibilities

4. (figuratively) An illusion, mirage.

   Many electoral promises are rainbows, vanishing soon after poll day.

5. (baseball) A curveball, particularly a slow one.
6. (poker slang) In Texas hold 'em or Omaha hold 'em, a flop that contains three different suits.
7. Rainbow trout.
   • 1911, Francis R. Steel, Catching the Rainbow Trout, in The Outing Magazine, volume 58, page 482:

     Finally, by actual trial, I have found that I can catch more rainbow by using one fly than with a two or three-fly cast.

• (prismatic reflection): spectrum

• lunar rainbow
• marine rainbow

• rainbow-colored
• rainbow-like
• rainbows and unicorns

• Sranan Tongo: alenbo

rainbow (not comparable)

1. Multicolored.
2. (attributive, chiefly US) Made up of several races or ethnicities, or (more broadly) of several cultural or ideological factions.
   • 1994, John Simon, Of Dogs, Their Masters, and Others, in New York magazine, September 5 1994, page 51:

     That Asian-American actor Thomas Ikeda contributes a pleasingly frantic Panthino would not be considered rainbow enough.

   • 2006, Anthony Summers, Robbyn Swan, Sinatra: The Life, page 246:

     He went along with them because the Pack was a rainbow group — two Italian-Americans, a black man, a Jew (Bishop), and a sometime Englishman (Lawford) — and they were making a point.

   • 2007, Melissa Haussman, Birgit Sauer, Gendering the state in the age of globalization, page 67:

     The 1999 June elections led to a surprise change in the governing coalition from the long-term ruling Christian Democrats to a rainbow group of Greens, Liberals, and Socialists.

   • 2007, Hooson, in a Letter to the Western Mail, 19 June 2007, published in Crossing the Rubicon: coalition politics Welsh style by John Osmond, page 28:

     […] it seemed to me to be naive indeed for the Liberal Democrats to believe that they could simply enter into a rainbow alliance against the Labour Government.

   • 2008, Bidyut Chakrabarty, Indian politics and society since independence, page 76:

     Mayawati has succeeded in building a social coalition that inverts the pyramid of caste/class hierarchy by building a rainbow alliance of social groups, now dominated by that greatest underclass of all, namely Dalits.

3. (attributive) LGBT.
   • 2005, Alan McKee, The public sphere: an introduction, page 167:

     Similarly, the question of who belongs in such a rainbow alliance isn't set. It can include gay men, lesbians, bisexuals and transgender individuals. It can include people who are 'questioning' which culture they belong to [...]

4. (poker, chiefly of a flop) Composed entirely of different suits.

• In the United States, 'rainbow' groups/families/alliances/coalitions were originally those made up of several races or ethnicities. The term is now used more broadly, to refer (in the 2007 quotation, for example) to an alliance of several political parties. Separately, use of a rainbow flag as an LGBT symbol has led to the term being used to refer to LGBT groups (initiatives, etc).

• (multicolored): motley, multihued, polychromatic; see also Thesaurus:multicolored
• (made up of several races or ethnicities): multiethnic, multiracial
• (made up of several factions): multipartisan

rainbow (third-person singular simple present rainbows, present participle rainbowing, simple past and past participle rainbowed)

1. (transitive) To pattern with many colours, like a rainbow.

• Weisenberg, Michael (2000) The Official Dictionary of Poker. MGI/Mike Caro University. ISBN 978-1880069523