Strong’s Hebrew
H4247 — mchillah
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
מְחִלָּה
mchillah — pronounced mekh-il-law
from 2490; a cavern (as if excavated):--cave. see H02490
1 occurrence in the KJV.
Isaiah 2:19
And they shall go into the holes of the rocks, and into the caves of the earth, for fear of the LORD, and for the glory of his majesty, when he ariseth to shake terribly the earth.