Definition of peacock moth in English:

peacock moth

noun

  • 1Any of several small Eurasian geometrid moths of the genus Semiothisa, especially S. notata, which has pale wings with dark markings.

  • 2A very large Eurasian saturniid moth, Saturnia pyri, with prominent eye-like markings on the wings (more fully giant peacock moth).

Origin

Early 20th century; earliest use found in The New English Dictionary.