Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun lockup

2 senses of lockup

Sense 1
lockup -- (jail in a local police station)
       => jail, jailhouse, gaol, clink, slammer, poky, pokey -- (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))

Sense 2
locking, lockup -- (the act of locking something up to protect it)
       => protection -- (the activity of protecting someone or something; "the witnesses demanded police protection")