lockup

A "lockup" is not always about crime. It often means a small jail or holding cell where police keep people for a short time. It can also mean a secure place for storage, such as a bike lockup at a station or a rented garage for a car or tools. In other fields, the word can describe a computer freeze or a period when company shares cannot be sold. In each case, the idea is the same: something is kept shut, fixed in place, or temporarily unavailable.

The word "lockup" carries several meanings built around the idea of something being shut away, secured, or unable to move. Its most familiar meaning is a small jail or holding cell, often at a police station, where people are kept for a short time. When someone is taken to the police lockup, the sense is plain: they are being held in confinement for the moment.

The word is also used for secure storage spaces. In some places, a lockup can be a rented garage or other enclosed unit used to store a car, motorcycle, tools, or stock. A bike lockup at a station, school, or office is another common example: it is a place where bicycles are kept safely behind a gate, door, or other barrier.

In finance, the word appears in the phrase "lockup period." This is a set period, often after a company goes public, when insiders such as founders or early investors are not allowed to sell their shares. The purpose is to avoid a sudden wave of selling as soon as trading begins.

In technical use, a lockup is a computer freeze. If a machine stops responding to the keyboard, mouse, or screen input, people may say the system has gone into lockup.

Whether it refers to a holding cell, a storage unit, a share-sale restriction, or a frozen computer, "lockup" suggests the same core idea: something is shut in, locked down, or temporarily unable to move or change.