'Kneading troughs' in the Bible

And the river shall bring forth frogs abundantly, which shall go up and come into thy house, and into thy bed-chamber, and upon thy bed, and into the house of thy servants, and upon thy people, and into thy ovens, and into thy kneading troughs:

And the people took their dough before it was leavened, their kneading troughs being bound up in their clothes upon their shoulders.