Assertion: peacock's tail feather | /r/Synonym | train
Facets:
Source sentences:
text: When male peacocks are not displaying, their tail feathers, called trains, drag behind them.
text: During courtship, a peacock will spread his tail feathers (known as a ‘train’) into a large fan-shape and strut about, shaking the feathers to attract the attention of the peahens.