/ Dictionary / Index S 16-gauge: Meaning and Definition of Find definitions for: 16-gauge Pronunciation: (siks'tēn-gāj'), [key] — adj. of, pertaining to, or being a size of shotgun shell having a diameter of 0.662 in. (1.68 cm). of, pertaining to, or being a shotgun using such a shell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sixteen sixteenmo Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language