butterfly dam

butterfly dam
Etymology: so called from its opening like the wings of a butterfly
: a movable steel dam pivoted at top and bottom and opened and closed by a rack-and-pinion mechanism and electric motor

Useful english dictionary. 2012.

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  • Madame Butterfly — an opera (1904) by Giacomo Puccini. Also, Madama Butterfly /meuh dam euh, dah meuh/, Madam Butterfly. * * * …   Universalium

  • Madame Butterfly — an opera (1904) by Giacomo Puccini. Also, Madama Butterfly /meuh dam euh, dah meuh/, Madam Butterfly …   Useful english dictionary

  • Madame Butterfly —   [ma dam bʌtərflaɪ], Oper von G. Puccini, Text von G. Giacosa und L. Illica nach D. Belasco; Uraufführung 17. 2. 1904 in Mailand, umgearbeitete dreiaktige Fassung 28. 5. 1904 in Brescia …   Universal-Lexikon

  • environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

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