/ Dictionary / Index S sea slug: Meaning and Definition of Find definitions for: sea' slug" Pronunciation: [key] a nudibranch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seaside sparrow sea smoke Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language