/ Dictionary / Index S sea ladder: Meaning and Definition of Find definitions for: sea' lad"der Pronunciation: [key] a set of rungs fixed to the side of a vessel, forming a ladder from the weather deck to the water line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sealab sea lamprey Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language