a removable lock with a hinged or pivoting link to be passed through a staple, chain, or eye
transitive verb
to fasten with or as with a padlock
to close (a building) against entrance
See padlock in American Heritage Dictionary 4
(pădˈlŏkˌ)
noun
A detachable lock with a U-shaped bar hinged at one end, designed to be passed through the staple of a hasp or a link in a chain and then snapped shut.