Lexical Definition

‎אוּר‎ ʼûwr (ore) flame H:N-M
from ‎אוֹר‎

fire, light. See also ‎אוּרִים‎.

1) flame, light of fire

See Greek: ἀλήθεια · ἄχυρον · δῆλος · κονιορτός · πῦρ · χώρα

Brown-Driver-Briggs

I. ‎אוּר‎ noun masculine flame. ‎לְכוּ בְאוּר אֶשְּׁכֶם‎ walk in the flame of your fire Isa 50:11, & so fire itself, whose light & flame were seen Isa 44:16; Isa 47:14 — exile Isaiah + Isa 31:9 & Ezek 5:2 (Co ‎אשׁ‎).

Brown-Driver-Briggs References

Book Refs
Isaiah 31:9 · 44:16 · 47:14 · 50:11
Ezekiel 5:2