'Blocks' in the Bible

And this becomes his uncleanness in his fluid discharge: [whether] his body secretes his fluid discharge or his body blocks his fluid discharge, it [is] his uncleanness.

May it be known to the king that we went to the province of Judah, the house of the great God. It is being built with stone blocks and timber is being put in the walls. This work is being done with diligence and is making progress in their hands.