| Subject | English | Serbian |
| PSP | circuit-breaker with lock-out preventing closing | прекидач са запречним затварањем |
| therm.energ. | lock chamber | запречна комора |
| el.gen. | lock-out | коначно окидање |
| el.gen. | lock-out | коначно искључење |
| comp., MS | lock screen | екран закључавања (The screen that appears when a user locks the PC) |
| comp., MS | lock token | токен закључавања (The value that is returned on successful execution of the WebDAV LOCK method. This value is used to transact subsequent requests) |
| comp., MS | Lock Tracking | Закључај праћење (An option that turns on change tracking and lets you set a password to prevent unauthorized users from turning it off) |
| comp., MS | rotation lock | закључавање ротирања (A software setting that disables display rotation) |
| comp., MS | rotation lock button | дугме за закључавање ротације (The button or slider on tablets and convertible tablets that rotates the display) |