a conical cap of soft material worn during ancient times that became a symbol of liberty during the French Revolution
Phrygian cap in American English
noun
a soft, conical cap represented in ancient Greek art as part of Phrygian or oriental dress and associated, since the late 18th and early 19th centuries, with the liberty cap
Word origin
[1840–50]This word is first recorded in the period 1840–50. Other words that entered Englishat around the same time include: bypass, creationism, plaque, pylon, sensationalism