eolith Syllabification: (e·o·lith)Pronunciation: /ˈēəˌliTH/Definition of eolith noun Archaeology a roughly chipped flint found in Tertiary strata, originally thought to be an early artifact but probably of natural origin. Origin: late 19th century: from Greek ēōs 'dawn' + lithos 'stone'eolith in other Oxford dictionaries Definition of eolith in the British & World English dictionary