/ Dictionary / Index R royal mast: Meaning and Definition of Find definitions for: roy'al mast' Pronunciation: [key] — Naut. Naut. a mast situated immediately above, and generally formed as a single spar with, a topgallant mast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. royal marriage Royal Oak Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language