molly

¹ American  

[mol-ee] / ˈmɒl i /

noun

plural

mollies

1. any of certain livebearing freshwater fishes of the genus Poecilia (formerlyMollienisia ), popular in home aquariums.

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molly ² American  

[mol-ee] / ˈmɒl i /

noun

plural

mollies

1. a type 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.

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molly ³ American  

[mol-ee] / ˈmɒl i /

noun

Slang.

1. Often Molly MDMA.

2. any amphetamine.

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molly ⁴ American  

[mol-ee myool] / ˈmɒl i ˌmyul /

noun

1. a female mule.

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Molly ⁵ American  

[mol-ee] / ˈmɒl i /

noun

1. a female given name, form of Mary or Milicent.

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molly ¹ British  

/ ˈmɒlɪ /

noun

1. any brightly coloured tropical or subtropical American freshwater cyprinodont fish of the genus Mollienisia

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molly ² British  

/ ˈmɒlɪ /

noun

1. informal an effeminate, weak, or cowardly boy or man

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Etymology

Origin of molly¹

First recorded in 1930–35; shortened from New Latin Mollienisia, named after French statesman Count F. N. Mollien (1758–1850); see -ia

Origin of molly²

First recorded in 1930–35; formerly a trademark

Origin of molly³

First recorded in 1975–80; origin uncertain; perhaps a shortening of black molly, a tropical aquarium fish supposedly resembling the black pills; other authorities suggest it is a shortening and alteration of molecule ( def. )

Origin of molly⁴

First recorded in 1980–85; generic use of the proper name

Example Sentences

I founded molly moon’s with the mission of making the world a better place, one scoop at a time.

From Seattle Times • May 10, 2023

Organisms like the salmon and molly that can tolerate a relatively wide range of salinity are referred to as euryhaline organisms.

From Textbooks • Jun. 9, 2022

Whereas kingfishers would plunge into the water to pursue a molly, kiskadees would only skim the water’s surface with their beak, sparking fewer waves in response.

From Scientific American • Dec. 22, 2021

Then you might want to meet the Amazon molly, a species of fish in the southwestern United States and northeast Mexico.

From New York Times • Feb. 26, 2021

Genie wanted to point it out to Grandpop, but Grandma had said not to mention it, and when Crab did mention it, he almost got molly whopped.

From "As Brave As You" by Jason Reynolds