/ Dictionary / Index R red lead: Meaning and Definition of Find definitions for: red' lead' Pronunciation: (led), [key] an orange to red, heavy, earthy, water-insoluble, poisonous powder, PbO, obtained by heating litharge in the presence of air: used chiefly as a paint pigment, in the manufacture of glass and glazes, and in storage batteries. Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. red larkspur red-lead putty Related Content Daily Word Quiz: reluctant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language