hearthstone

noun

Pronunciation: /ˈhɑɹθstoʊn/ / /ˈhɑːθstəʊn/

Etymology: From hearth + stone.

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 […].”
The fireside, home life.
“I am going to my own hearth-stone, / Bosomed in yon green hills alone,”
“The mystic chords of memory, stretching from every battle-field, and patriot grave, to every living heart and hearth-stone, all over this broad land”
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”

Etymology: From hearth + stone.

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.”