Brown-Driver-Briggs (BDB)
H6635a
H6635a צָבָא army , war , warfare . army , host . war , warfare , service . service H6635b צְבָאוֹת army , war , warfare . army , host . war , warfare , service . service . צְבָאוֹת , in name of י׳ as God of war, prob. first in time of warlike David (some connect with sacred ark, but ark older)
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain