English

singletail

From single + tail.

A compound of single + tail

Proto-Indo-European *sem- ‘one’

Latin singulus ‘one each’

Old French sengle

Middle English single

Proto-Indo-European *deḱ- ‘to tear, fray, shred’

…

Proto-Germanic *taglą ‘hair, fiber’

Proto-West Germanic *tagl

Old English tæġel

Middle English tail

English tail

Today it means

noun A variety of goldfish with an undivided tail.

Language periods are conventional ranges, not dates for this word.

Etymograph / singletail