Strong’s Greek
G850 — auchmeros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
αὐχμηρός
auchmeros — pronounced owkh-may-ros'
from auchmos (probably from a base akin to that of 109) (dust, as dried by wind); properly, dirty, i.e. (by implication) obscure:--dark. see GREEK for 109
1 occurrence in the KJV.
2 Peter 1:19
We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts: