/ Dictionary / Index S stuffing box: Meaning and Definition of Find definitions for: stuff'ing box" Pronunciation: [key] — Mach. Mach. a device for preventing leakage of gases or liquids along a moving rod or shaft at the point at which it leaves a cylinder, tank, ship hull, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stuffing stuffing nut Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language