Strong's #950: buwqah (pronounced boo-kaw')
feminine passive participle of an unused root (meaning to be hollow); emptiness (as adjective):--empty.
Brown-Driver-Briggs Hebrew Lexicon:
ּּ
bûqâh
1) emptiness
Part of Speech: noun feminine
Relation: passive participle of an unused root (meaning to be hollow)
Usage:
This word is used 1 times:
Nahum 2:10: " She is empty, and void, and waste: and the heart melteth, and the knees smite together, and much pain"