OT-LAW.filter - nkjv troughs:

nkjv@Genesis:30:38 @ And the rods which he had peeled, he set before the flocks in the gutters, in the watering troughs where the flocks came to drink, so that they should conceive when they came to drink.

nkjv@Exodus:2:16 @ Now the priest of Midian had seven daughters. And they came and drew water, and they filled the troughs to water their father's flock.