D defs.my
Entry 2 senses Webster, 1913

Lockup

/läk'-ŭpˌ/ · Lock·up · IPA /lˈɑkˌʌp/
01 n. A place where persons under arrest are temporarily locked up; a watchhouse; a jail.
  1. 1.
    A place where persons under arrest are temporarily locked up; a watchhouse; a jail.
  2. 2.
    A malfunction in a machine having moving parts, such that the moving part cannot move; a seizure.