/ Dictionary / Index H Heidelberg jaw: Meaning and Definition of Find definitions for: Hei'delberg jaw' Pronunciation: [key] a human lower jaw of early middle Pleistocene age found in 1907 near Heidelberg, Germany. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Heidelberg Heidelberg man Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language