prisonem
Prisionem is a term that appears in some discussions of Latin and in stylized uses, but it is not a standard classical Latin word. In classical Latin the common noun for a prison is carcer, with the accusative form carcerem. Therefore prisonem is not attested as a regular form in stable Latin dictionaries or texts.
In modern or pseudo-Latin writings, prisonem may be used as a stylized or borrowed form to represent
Etymology and usage notes: if prisonem were to be treated as a Latinized loanword from vernaculars such
See also: carcer, carcerem, custodia, imprisonment in Latin literature.
References: there is no staple dictionary entry for prisonem in standard Latin lexica; for accurate Latin vocabulary