Where does “swordtail” come from?

swordtail (English) comes from English sword, from Middle English sword, from Old English sword, from Old English sweord, from Proto-Germanic swerdą, from Proto-Indo-European swēr- — heavy.

swordtail (English): One of many species of freshwater fish, in genus...

Definitions

  1. One of many species of freshwater fish, in genus...

Ancestry of “swordtail”, step by step

swordtail traces back through two separate lines of ancestry.

via English sword

StepLanguageWordMeaning
1EnglishswordA long-bladed weapon with a hilt, and usually a...
2Middle Englishswordsword, sabre; Military might or power
3Old EnglishswordAlternative form of sweord
4Old Englishsweorda sword
5Proto-Germanicswerdąsword
6Proto-Indo-Europeanswēr-heavy

via English Tail

StepLanguageWordMeaning
1EnglishTailA Chinese constellation coinciding with the tail of Scorpius, one of the 28 lunar mansions and the tail of Azure Dragon
2Middle EnglishtaylA tail; The back side or reverse of a creature; A...
3Old Englishtæġltail
4Proto-Germanictagląhair; ponytail; hair of a tail; tail
5Proto-Indo-Europeandoḱ-hair of the tail
6Proto-Indo-Europeandeḱ-take; perceive
Every word from Proto-Indo-European swēr-
swordtail — Etymology, Origin & Word History | Etymology Explorer