/ Dictionary / Index S scaffold nail: Meaning and Definition of Find definitions for: scaf'fold nail" Pronunciation: [key] a nail used in building temporary structures, having a stop on its shank to prevent its being driven in all the way and to leave the head free for pulling. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. scaffolding scag Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language