padlock

nouns

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
padlock
is a type of (narrower)
a fastener fitted to a door or drawer to keep it firmly closed
lock

verbs

fasten with a padlock
padlock
is a type of (narrower)
fasten with a lock
"lock the bike to the fence"
lock