'Tongues' in the Bible

So he took the people down to the water; and the Lord said to Gideon, Put on one side by themselves all those drinking up the water with their tongues like a dog; and in the same way, all those who go down on their knees to the water while drinking.

Now the number of those who took up the water with their tongues was three hundred; all the rest of the people went down on their knees to the water.

And the Lord said to Gideon, By those three hundred who were drinking with their tongues I will give you salvation and give the Midianites into your hands; let the rest of the people go away, every man to his place.