Synonyms for Lockups:

n.

•prisons (noun)
Pillories, reformatories, collars, fences, coops, reform schools, strongholds, coolers, cages, confines, Cells, gaols, Prisons, shackles, manacles, penal colonies, handcuffs, jailhouses, straight jackets, pinions, dungeons, oubliettes, jails, vises, pounds, bridles, irons, brigs, Pens, stockades, harnesses, tethers, Penitentiaries, keeps.