tsaba' (Hebrew #6635)
from 6633; a mass of persons (or figuratively, things), especially reg. organized for war (an army); by implication, a campaign, literally or figuratively (specifically, hardship, worship)
KJV usage: appointed time, (+) army, (+) battle, company, host, service, soldiers, waiting upon, war(-fare).
Pronounce: tsaw-baw'
Origin: or (feminine) tsbadah {tseb-aw-aw'}