Genesis 38:19 Meaning

17And he said, I will send thee a kid from the flock. And she said, Wilt thou give me a pledge, till thou send it?

18And he said, What pledge shall I give thee? And she said, Thy signet, and thy bracelets, and thy staff that is in thine hand. And he gave it her, and came in unto her, and she conceived by him.

19And she arose, and went away, and laid by her vail from her, and put on the garments of her widowhood.

20And Judah sent the kid by the hand of his friend the Adullamite, to receive his pledge from the woman's hand: but he found her not.

21Then he asked the men of that place, saying, Where is the harlot, that was openly by the way side? And they said, There was no harlot in this place.