hearthstone UK /ˈhɑːθstəʊn/US /ˈhɑɹθstoʊn/noun 3verb 1forms 3 noun3 •A flat stone used to form a hearth.I took a seat at the end of the hearthstone opposite that towards which my landlord advanced […]. — 1847 •(figurative) The fireside, home life.I am going to my own hearth-stone, / Bosomed in yon green hills alone, — 1846 •A soft kind of stone used to whiten doorsteps, scour floors, etc.Lastly, there is the hearth-stone barrow, piled up with hearth-stone, Bath-brick and lumps of whiting — 1861 verb1 •To scour, as a floor, with hearthstone.We've a woman come in twice a week, to scrub, and red-brick, and hearthstone, and black-lead, and the rest we manage ourselves. — 1876 formshearthstoned · hearthstoning · hearthstones