'Four square' in the Bible

And in like manner, unto the door of the temple, he made posts of olive tree four square,

And he built the house of the wood of Lebanon, a hundred cubits long and fifty broad, and thirty high, four square with rows of Cedar pillars and Cedar beams along upon the pillars.

And all the doors with the side posts were four square one against another three fold.

And the stalk of the laver was in the middle of the bottom one cubit high, and a cubit and a half round, and it had knops thereon in the bare places which were foursquare not round.