'Widow's' in the Bible

So she removed her widow's clothes and covered herself with a veil. She wrapped herself and sat at the entrance to Enaim which is on the way to Timnah. (She did this because she saw that she had not been given to Shelah as a wife, even though he had now grown up.)

She left immediately, removed her veil, and put on her widow's clothes.

You must not pervert justice due a resident foreigner or an orphan, or take a widow's garment as security for a loan.

They drive away the orphan's donkey; they take the widow's ox as a pledge.

the blessing of the dying man descended on me, and I made the widow's heart rejoice;