'Base' in the Bible

The altar was of wood, three cubits high and its length two cubits; its corners, its base and its sides were of wood. And he said to me, “This is the table that is before the Lord.”

“And these are the measurements of the altar by cubits (the cubit being a cubit and a handbreadth): the base shall be a cubit and the width a cubit, and its border on its edge round about one span; and this shall be the height of the base of the altar.

From the base on the ground to the lower ledge shall be two cubits and the width one cubit; and from the smaller ledge to the larger ledge shall be four cubits and the width one cubit.

The ledge shall be fourteen cubits long by fourteen wide in its four sides, the border around it shall be half a cubit and its base shall be a cubit round about; and its steps shall face the east.”