Strong's #6289: pa'ruwr (pronounced paw-roor')

from 6286; properly, illuminated, i.e. a glow; as noun, a flush (of anxiety):--blackness.

Brown-Driver-Briggs Hebrew Lexicon:

ּּ

pâ'rûr

1) glow, heat

1a) meaning dubious

Part of Speech: noun masculine

Relation: from H6286

Usage:

This word is used 2 times:

 

Joel 2:6: "shall be much pained: all faces shall gather blackness."
Nahum 2:10: "and the faces of them all gather blackness."