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1. A building that accommodates a military guard.
2. A jail for the detention of military personnel guilty of minor offenses or awaiting court-martial.
(Military) military a building serving as the headquarters or a post for military police and in which military prisoners are detained
n., pl. -hous•es (-ˌhaʊ zɪz)
a building used for housing military personnel on guard duty or for the temporary detention of prisoners.
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|Noun||1.||guardhouse - a military facility that serves as the headquarters for military police and in which military prisoners can be detained|
HQ, military headquarters, headquarters - the military installation from which a commander performs the functions of command; "the general's headquarters were a couple of large tents"