Boyd’s Bible Dictionary:
(heated stone). An unknown place (2 Kings 19:12; Isa. 37:12).
Concise Bible Dictionary:
Place which the king of Assyria boasted of his “fathers” having destroyed (2 Kings 19:12; Isa. 37:12). Several places have been known bearing this name. There is one west of the Euphrates, on the road from Racca to Hums, and another on the east of the river, near Bagdad; both have been suggested as probable identifications.
Strong’s Dictionary of Hebrew Words:
Meaning:
the same as 7529; Retseph, a place in Assyrian
Jackson’s Dictionary of Scripture Proper Names:
burning: glowing
Potts’ Bible Proper Names:
Wide smooth pavement; heated stone:―place in Assyria, 2 Kings 19:12. {Solum stratum latum}