Lexical Definition

‎מַצָּבָה‎ matstsâbâh (mats-tsaw-baw') guard H:N-F
or מִצָּבָה mitstsâbâh (mits-tsaw-baw'); feminine of ‎מַצָּב‎

army, garrison.

1) guard, watch, army

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
מִצָּבָה֙ a guard Zech.9.8
הַמַּצָּבָ֜ה the garrison 1Sam.14.12

Brown-Driver-Briggs

‎מַצָּבָה‎ noun feminine ‎׳‎‎אַנְשֵׁי מ‎ 1Sam 14:12 see ‎מַצָּב‎.

‎מִצָּבָה‎ noun feminine guard, watch ? — only ‎וְחָנִיתִי‎ ‎׳‎‎לְבֵיתִי מ‎ Zech 9:8 and I encamp as watch for my house (so We Now GASm, but dubious; Kue Sta MartiKau GASm read ‎מַצָּבָה‎, but this probably non-existent, see above; ᵑ0 apparently intends because of a host = ‎מִצָּבא‎).

Brown-Driver-Briggs References

Book Refs
1 Samuel 14:12
Zechariah 9:8