House, probably a city of Moab, which had a celebrated
idol-temple (Isa. 15:2). It has also been regarded as denoting
simply the temple of the idol of Moab as opposed to the “high
place.”
Smith's Dictionary
(the horse), referring to the “temple” of the false gods of Moab, as opposed to the “high places” in the same sentence. (Isaiah 15:2) and comp. (Isaiah 16:12)