gaol

nouns

a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)
clink, gaol, jail, jailhouse, pokey, poky, slammer

verbs

lock up or confine, in or as in a jail
"The suspects were imprisoned without trial"; "the murderer was incarcerated for the rest of his life"
gaol, immure, imprison, incarcerate, jail, jug, lag, put away, put behind bars, remand
is derived from
gaoler