Strong's #2329: chuwg (pronounced khoog)
from 2328; a circle:--circle, circuit, compass.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
chûg
1) circle, circuit, compass
2) (BDB) vault (of the heavens)
Part of Speech: noun masculine
Relation: from H2328
Usage:
This word is used 3 times:
Job 22:14: "to him, that he seeth not; and he walketh in the circuit of heaven."
Proverbs 8:27: "I was there: when he set a compass upon the face of the depth:"
Isaiah 40:22: "It is he that sitteth upon the circle of the earth, and the inhabitants that stretcheth out the heavens"