Definition: [noun] a jail, especially a temporary one.
Definition: [noun] non-residential premises that can be locked up, typically a small shop or garage.
Example: a lock-up garage
Definition: [noun] the locking up of premises for the night.
Definition: [noun] the action of becoming fixed or immovable.
Example: anti-lock braking helps prevent wheel lock-up
Definition: [noun] an investment in assets which cannot readily be realized or sold on in the short term.