Lock-up and Pen

Pen and lock-up are semantically related in cooler topic. In some cases you can use "Pen" instead the phrase "Lock-up" as a noun or a verb. informal substitute

Pen noun - A place of confinement for persons held in lawful custody.

Lock-up and pen are semantically related in enclosure topic. You can use "Lock-up" instead a noun "Pen".

Nearby Word: penholder