'Trench' in the Bible

and he buildeth with the stones an altar, in the name of Jehovah, and maketh a trench, as about the space of two measures of seed, round about the altar.

and the water goeth round about the altar, and also, the trench he hath filled with water.

And there falleth a fire of Jehovah, and consumeth the burnt-offering, and the wood, and the stones, and the dust, and the water that is in the trench it hath licked up.