Definition of molly in English:


Syllabification: mol·ly
Pronunciation: /ˈmälē
(also mollie)


  • A small, livebearing freshwater fish that is popular in aquariums and has been bred in many colors, especially black.
    • Genus Poecilia, family Poeciliidae: several species, in particular P. sphenops. See also sailfin molly
    More example sentences
    • Many fish lay eggs, but some - including common aquarium fish such as guppies, swordtails, and mollies - retain the eggs inside their bodies until hatching.
    • The company rears popular varieties like goldfish, angelfish, mollies and fighters in its farm near Coimbatore.
    • Female Mexican mollies, P. mexicana, did not discriminate between sworded males and unsworded males based on mating interest.


1930s: from modern Latin Mollienisia (former genus name), from the name of Count Mollien (1758–1850), French statesman.

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Word of the day milord
Pronunciation: mɪˈlɔːd
used to address an English nobleman