/ Dictionary / Index U u. and l.c.: Meaning and Definition of Find definitions for: u. & l.c. Pronunciation: [key] — Print. Print. upper and lower case. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ua mau ke ea o ka aina i ka pono* U.A.R. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language