Strong’s Hebrew
H6289 — pa'ruwr
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
פָּארוּר
pa'ruwr — pronounced paw-roor
from 6286; properly, illuminated, i.e. a glow; as noun, a flush (of anxiety):--blackness. see H06286
2 occurrences in the KJV.
Joel 2:6
Before their face the people shall be much pained: all faces shall gather blackness.
Nahum 2:10
She is empty, and void, and waste: and the heart melteth, and the knees smite together, and much pain is in all loins, and the faces of them all gather blackness.