/ Dictionary / Index S seppuku: Meaning and Definition of Find definitions for: sep•pu•ku Pronunciation: (se-p'koo), [key] — n. hara-kiri (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seppuku (Thesaurus) Sepoy Rebellion sepsis Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language