lockup

nouns

jail in a local police station
lockup
is a type of (narrower)
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
the act of locking something up to protect it
locking, lockup
is derived from
lock up
is derived from
lock up