'Washed' in the Bible

And David said to Uriah, Go down to your house and let your feet be washed. And Uriah went away from the king's house, and an offering from the king was sent after him.

Then David arose from the earth, and washed, and anointed himself, and changed his apparel, and came into the house of the LORD, and worshipped: then he came to his own house; and when he required, they set bread before him, and he did eat.

And Mephibosheth the son of Saul came down to meet the king, and had neither dressed his feet, nor trimmed his beard, nor washed his clothes, from the day the king departed until the day he came again in peace.