'Kneading troughs' in the Bible

And the river shall swarm with frogs, and they shall go up and come into thy house, and into thy bedroom, and upon thy bed, and into the house of thy bondmen, and upon thy people, and into thine ovens, and into thy kneading-troughs.

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