'imprisonment' definitions:

Definition of 'imprisonment'

(from WordNet)
noun
Putting someone in prison or in jail as lawful punishment
noun
The state of being imprisoned; "he was held in captivity until he died"; "the imprisonment of captured soldiers"; "his ignominious incarceration in the local jail"; "he practiced the immurement of his enemies in the castle dungeon" [syn: captivity, imprisonment, incarceration, immurement]
noun
The act of confining someone in a prison (or as if in a prison) [syn: imprisonment, internment]

Synonyms of 'imprisonment'

From: Moby Thesaurus