Definition of peacock's tail in English:

peacock's tail

Pronunciation /ˌpiːkɒks ˈteɪl/


  • 1The tail coverts of a peacock collectively, which the bird is able to erect and expand like a fan behind its body.

  • 2Alchemy
    historical An iridescent or multicoloured stage in the preparation of the philosopher's stone.

  • 3The seaweed Padina pavonia, which has broadly fan-shaped fronds marked with fringed bands in shades of brown and green.


Early 16th century. From the genitive of peacock + tail.