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Definition of swordtail

swordtail

/ˈsɔːrd.teɪl/
sword · tail

Plural:swordtails
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swordtail Lexical Profile

swordtail Game Scores & Validity

• noun

1

A small, brightly colored freshwater fish (Xiphophorus hellerii) native to North and Central America, popular in home aquariums and characterized by the male's elongated, sword-like lower tail fin.

Example

"He stocked his new tropical aquarium with a school of neon tetras, a pair of guppies, and a vibrant orange swordtail."


2

Any of various butterflies, primarily of the genus Graphium, characterized by long, slender, sword-like extensions on their hindwings.

Example

"The entomologist observed a vivid green swordtail resting delicately on the rainforest canopy."

Word Origin & Etymology

A compound of 'sword' and 'tail', referring to the elongated, sword-like appearance of the lower lobe of the tail fin in the male fish, or the long hindwing extensions on the butterfly.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Swordtail. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/swordtail
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