/ Dictionary / Index S slimline: Meaning and Definition of Find definitions for: slim•line Pronunciation: (slim'līn"), [key] — adj. slim in appearance. of, pertaining to, or noting a long, slender shape, design, or item. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slime mold slimmer Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language