English
Phrygian cap
From Phrygian (“of or relating to Phrygia, its people or their culture”) + cap.
The story
Sense 2 (‘congenital abnormality of the gall bladder’) is a calque of German phrygische Mütze, coined by J. Bartel in 1916 and popularized by Edward A.
Today it means
noun A soft, close-fitting conical cap with the top bent forward, represented in Greek and Roman art as worn by ancient Phrygians, and later associated with the Roman liberty cap.
Language periods are conventional ranges, not dates for this word.
Etymograph / Phrygian cap