/ Dictionary / Index C collunarium: Meaning and Definition of Find definitions for: col•lu•nar•i•um Pronunciation: (kol"yu-nâr'ē-um), [key] — pl. -nar•i•a a solution for application in the nose; nose drops. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. collun. collusion Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language