/ Dictionary / Index S sail plan: Meaning and Definition of Find definitions for: sail' plan" Pronunciation: [key] — Naval Archit. Naval Archit. a side elevation of a sailing vessel showing all sails and spars and some or all of the standing rigging, as if set directly fore-and-aft so that the true proportions are visible: sometimes combined with the rigging plan of the vessel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sail-over sailplane Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language