"removable lock," late 15c., from lokke (see lock (n.)), but the first element is of unknown origin.

1640s, from padlock (n.). Related: Padlocked; padlocking.

A padlock display in a browser is intended to indicate a secure connection or website, although it may not always be a reliable indicator. Users should look instead for 'HTTPS' at the beginn [..]

A secret code made up by a user to protect their account, data or device.

(n) a detachable lock; has a hinged shackle that can be passed through the staple of a hasp or the links in a chain and then snapped shut(v) fasten with a padlock

A comparatively small removable and portable locking device, usually but not always key operated on one side only. The locking member is a circular hinged sliding or swivelled shackle which passes through a hole in a staple, locking bar or similar member.

A portable locking device that can be used to lock various item such as bicycles and containers. Sometimes used together with a chain.

Sierra Designs’ patented device for securing a sleeping bag to its pad, preventing it from sliding off onto cold surfaces during the night. PadLocks are compatible with any sleeping bag that has attachment loops. Easy to install, PadLocks can help you get a good night’s sleep in the wilderness.