INTERNMENT
impoundment, impounding, internment, poundage
(noun) placing private property in the custody of an officer of the law
imprisonment, internment
(noun) the act of confining someone in a prison (or as if in a prison)
internment
(noun) confinement during wartime
Source: WordNet® 3.1
Etymology
Noun
internment (countable and uncountable, plural internments)
Confinement within narrow limits, as of foreign troops, to the interior of a country.
Source: Wiktionary
In*tern"ment, n. Etym: [F. internement. See Intern.]
Definition: Confinement within narrow limits, -- as of foreign troops, to
the interior of a country.
Source: Webster’s Unabridged Dictionary 1913 Edition