'Watercourse' in the Bible

and the elders of that city shall bring down the heifer unto an ever-flowing watercourse, which is not tilled, nor is it sown, and shall break the heifer's neck there in the watercourse;

And all the elders of that city, that are nearest unto him that is slain, shall wash their hands over the heifer whose neck is broken in the watercourse,

And David said on that day, Whoever smites the Jebusites and gets up to the watercourse, and the lame and the blind hated of David's soul ...! Therefore they say, The blind and the lame shall not come into the house.