the broad-brimmed official hat of a Roman Catholic cardinal, symbolic of the office or rank of a cardinal.
Origin of red hat
First recorded in 1590–1600
Also called scarlet hat.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the broad-brimmed crimson hat given to cardinals as the symbol of their rank and office
the rank and office of a cardinal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012