Added 8 October 2026 hearthstone /ˈhɑɹθstoʊn/ noun Categories: ThingsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about hearthstone at Wordnik → Where our words come from → A stone that forms a hearth. Origin From hearth + stone. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: hearthrugflagstonetablestoneslabstonefire-gratecrucible Back to today's word