A flat, wide-brimmed red hat presented to a new cardinal by the pope as a symbol of the cardinal's rank.
Webster's New World
Red Hat Sentence Examples
It doesn't happen much when you wear tinfoil underneath a big floppy red hat.
A hundred years ago, Edith might have joined Annie, smiling her nights away at the Red Hat Saloon.
Seven years later, 19th December 1853, he received the red hat from Pius IX.
Dlugosz brought Olesnicki the red hat from Rome in 1449, and shortly afterwards was despatched to Hungary to mediate between Hunyadi and the Bohemian condottiere Giszkra, a difficult mission which he most successfully accomplished.
So it came about in 1869, that on the first occasion when there was a joint sitting of the Delegations to settle a point in the von Rauscher (1797-1875), cardinal archbishop of Vienna, who had earned his red hat by the share he had taken in arranging the concordat of 1855, and now attempted to use his great personal influence with the emperor (his former pupil) to defeat the bill.