/ Dictionary / Index F firing glass: Meaning and Definition of Find definitions for: fir'ing glass" Pronunciation: [key] a drinking glass of the 18th century having a conical, rounded body on a thick stem and a heavy spreading foot. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. firing firing line 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