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[mol-ee] /ˈmɒl i/
noun, plural mollies.
any of certain livebearing freshwater fishes of the genus Mollienisia, popular in home aquariums.
Origin of molly
shortened from New Latin Mollienisia, irregular named after Count F.N. Mollien (1758-1850); see -ia


[mol-ee] /ˈmɒl i/
plural Mollies. Trademark.
a brand of expansion bolt having a split, sleevelike sheath threaded at one end so that when inserted snugly into masonry the turning of the bolt draws the ends of the sheath together, thus spreading the sides.


[mol-ee] /ˈmɒl i/
a female given name, form of Mary or Milicent. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for molly
Contemporary Examples
Historical Examples
  • "Look at this sweet doll, molly," said Julia, from the other end of the shop.

  • And, astonished, he looked into the gray eyes of molly Herold.

    Blue-Bird Weather Robert W. Chambers
  • Godfrey was in the lowest spirits, and molly was quiet in consequence.

  • "One molly Skelton will do for one four years," he said as he rose up.

    Daisy Elizabeth Wetherell
  • molly, lieutenant Mulvey that kissed her under the Moorish wall beside the gardens.

    Ulysses James Joyce
British Dictionary definitions for molly


noun (pl) -lies
any brightly coloured tropical or subtropical American freshwater cyprinodont fish of the genus Mollienisia
Word Origin
C19: from New Latin Mollienisia, from Comte F. N. Mollien (1758–1850), French statesman


noun (pl) -lies
(Irish, informal) an effeminate, weak, or cowardly boy or man
Word Origin
C18: perhaps from Molly, pet name for Mary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for molly

seabird, 1857, short for mollymawk, from Dutch mallemok, from mal "foolish" + mok "gull."


fem. proper name, a familiar form of Mary.

Online Etymology Dictionary, © 2010 Douglas Harper
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