n. 炉底石, 砌炉石块, 家庭

[ noun ]
a stone that forms a hearth
<noun.artifact>

Hearthstone \Hearth"stone`\ (-st[=o]n`), n.
Stone forming the hearth; hence, the fireside; home.

Chords of memory, stretching from every battlefield and
patriot grave to every living heart and hearthstone.
--A. Lincoln.