'Floor' in the Bible

And the priest will take holy water in a pot and put in it dust from the floor of the House;

Of the first of your rough meal you are to give a cake for a lifted offering, lifting it up before the Lord as the offering of the grain-floor is lifted up.

And this lifted offering is to be put to your credit as if it was grain from the grain-floor and wine from the vines.

Say to them, then, When the best of it is lifted up on high, it is to be put to the account of the Levites as the increase of the grain-floor and of the place where the grapes are crushed.