'Sons in law' in the Bible

The men said to Lot, "Do you have anybody else here? Sons-in-law, your sons, your daughters, and whoever you have in the city, bring them out of the place:

Lot went out, and spoke to his sons-in-law, who were pledged to marry his daughters, and said, "Get up! Get out of this place, for Yahweh will destroy the city." But he seemed to his sons-in-law to be joking.