'Walled' in the Bible

And when a man selleth a dwelling-house in a walled city, then hath his right of redemption been until the completion of a year from its selling; days -- is his right of redemption;

and if it is not redeemed until the fulness to him of a perfect year, then hath the house which is in a walled city been established to extinction to the buyer of it, to his generations; it goeth not out in the jubilee;