/ Dictionary / Index S speos: Meaning and Definition of Find definitions for: spe•os Pronunciation: (spē'os), [key] — n. a cavelike temple, tomb, or the like, cut in rock. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Spenta Mainyu sperm 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