'Hearth' in the Bible

Command Aaron and his sons, saying, This is the law of the burnt-offering; this, the burnt-offering, shall be on the hearth on the altar all night unto the morning, and the fire of the altar shall be kept burning on it.

And everything where upon any part of their carcase falleth shall be unclean; oven and hearth shall be broken down: they are unclean, and shall be unclean unto you.