צבא

tsebah can mean army or war.

However, a few other words also seem to mean army:

מַעֲרָכָ֖ה ma-‘ă-rā-ḵāh army 4634 http://biblehub.com/hebrew/maarachah_4634.htm

חֵ֚יל ḥêl army 2428 http://biblehub.com/hebrew/cheil_2428.htm