Assertion: argus's tail | /r/Synonym | train
Facets:
Source sentences:
text: The peacock "tail", known as a "train", consists not of tail quill feathers, but highly elongated upper tail coverts.
text: The tail is dark brown and the "train" is made up of elongated upper tail coverts (more than 200 feathers, the actual tail has only 20 feathers) and nearly all of these feathers end with an elaborate eye-spot.
text: The peacock "tail", known as a "train", consists not of tail quill feathers, but highly elongated upper tail coverts.