'Pools' in the Bible

Then the Lord said to Moses, “Say to Aaron, ‘Take your staff and stretch out your hand over the waters of Egypt, over their rivers, over their streams, over their pools, and over all their reservoirs of water, so that they may become blood; and there shall be blood throughout all the land of Egypt, in containers both of wood and of stone.’”

Then the Lord said to Moses, “Say to Aaron, ‘Stretch out your hand with your staff over the rivers, over the streams and canals, over the pools [among the reeds], and make frogs come up on the land of Egypt.’”