"To open the lock" means to use a key or any other method to remove the device or mechanism that is keeping something closed or inaccessible. Full definition
This key opens the locked door that is found in the middle of the main room of the dungeon. (zeldadungeon.net)
You have to launch the Settings app and swipe over to the display tab, now open the lock screen option and tap on screen swipe effect. (phoneradar.com)
It is a tool that will help you to open any lock of the employment doors. (bestcoverletters.com)