/ Dictionary / Index F fillet weld: Meaning and Definition of Find definitions for: fil'let weld" Pronunciation: (fil'it), [key] — Metalworking. Metalworking. a weld with a triangular cross section joining two surfaces that meet in an interior right angle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. filleting fill-in Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language