The dungeon, or prison, by a synecdoche of the part for the whole. For it is not probable that Joseph, who was now so much employed, and intrusted with all the affairs of the prison and prisoners, Genesis 39:21-23, should still be kept in the dungeon properly so called. He shaved himself; for till then he suffered his hair to grow, as the manner was for persons in prison, or under great sorrow, 2 Samuel 19:24. But to appear in a mournful dress before the king was not convenient, nor usual. Compare Esther 4:4.
Related Commentaries of Genesis 41:14
Genesis 41:14
14 Then Pharaoh sent and called Joseph, and they brought him hastily out of the dungeon: and he shaved himself, and changed his raiment, and came in unto Pharaoh.