Breadcrumb Home > Dictionary > Index R red hat: Meaning and Definition of Find definitions for: red' hat' Pronunciation: [key] the broad-brimmed official hat of a Roman Catholic cardinal, symbolic of the office or rank of a cardinal. a cardinal. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. red-handed Red Hats TrendingHere are the facts and trivia that people are buzzing about. Who's Who in the "Lord of the Rings" Roman Catholic Church Hierarchy Current Events This Week: March 2023 42 Top Western Movie Quotes Slaves in the Family User's Guide to Environmental Language ✖ Related Content Daily Word Quiz: otiose Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language