'Kneading troughs' in the Bible

and the river shall swarm with frogs, which shall go up and come into your house, and into your bedchamber, and on your bed, and into the house of your servants, and on your people, and into your ovens, and into your kneading troughs:

The people took their dough before it was leavened, their kneading troughs being bound up in their clothes on their shoulders.