single word requests - What do you call the behaviour of "locking a door so that it cannot be opened inside without a key"? - English Language & Usage Stack Exchange
rusty lock, meaning can not be concealed Stock Photo - Alamy
Lock - definition of lock by The Free Dictionary
To lock yourself out / in | Confessions of the Linguistic Spy
padlock | meaning of padlock in Longman Dictionary of Contemporary English | LDOCE
Lock definition and meaning | Collins English Dictionary
Definition & Meaning of "Lock in" | LanGeek
lock | Wordsmyth Word Explorer Children's Dictionary; WILD dictionary K-2 | Wordsmyth
PADLOCK | English meaning - Cambridge Dictionary
lock - photo/picture definition at Photo Dictionary - lock word and phrase defined by its image in jpg/jpeg in English