Or (shortened) dbir {deb-eer'}; from dabar (apparently in the sense of oracle); the shrine or innermost part of the sanctuary -- oracle.
see HEBREW dabar
H1687. debir
I. דְּבִיר noun masculine (compare Arabic back, part behind) hindmost chamber, innermost room of the temple of Solomon = הקדשׁים קדשׁ holy of holies, most holy place, the place of the ark and the cherubic images, the throne-room of Yahweh 1 Kings 6:5, 16, 19, 20, 21, 22, 23, 31; 7:49 ( = 2 Chronicles 4:20) 8:6, 8 ( = 5:7, 9) 3:16; Psalm 28:2. Probably read דְּבִיר 2 Kings 10:25 also, for עִיר ᵑ0; so Klo after ᵐ5L. (It is translated oracle in AV RV after Aq Symm χρηματιστήριον, ᵑ9 oraculum, on the incorrect theory that it was derived from דִּבֶּר speak.)