/ Dictionary / Index B B.S.L.S.: Meaning and Definition of Find definitions for: B.S.L.S. Pronunciation: [key] Bachelor of Science in Library Science. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. B.S.L.M. B.S.M. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language