| Subject | English | Arabic |
| comp., MS | CAPS LOCK key | مفتاح Caps Lock (A toggle key that, when on, shifts the alphabetic characters on the keyboard to uppercase) |
| PSP | circuit-breaker with lock-out preventing closing | قاطع دارة ذو قفل لمنع الغلق |
| railw., sec.sys. | combined electric lock and circuit controller | قفل كهربائي مدمج مع متحكم في الدائرة |
| agric. | discharge lock-gate | سِكْر التصريف |
| econ. | keep under lock and key | احتفظ بِالشَّيء فِي مكان مغلق |
| pack. | lock and lap side seam | درزة الحصر الجانبية البراكبية |
| water.res. | lock and spill drain | مصرف الإحتجاز و الجريان |
| therm.energ. | lock chamber | غرفة الغلق |
| water.res. | lock gate | بوابات مجرى الماء |
| water.res. | lock gate | بوابة تصريف |
| water.res. | lock gate | بوابة مائية |
| water.res. | lock gate | بوابة حجز الماء |
| water.res. | lock gate | فتحة تصريف الماء |
| UN, econ. | lock in the interest rate | حجز سعر الفائدة |
| vet.med. | lock jaw | التيتانوس |
| vet.med. | lock jaw | الكزاز |
| vet.med. | lock jaw | كزاز الفك |
| vet.med. | lock jaw | تشنج عضلات الفك |
| transp. | lock-kilometre | سَدُّ كيلومتر |
| el.gen. | lock-out | فصل نهائى |
| econ. | lock out workers | منع العمال من الدخول |
| econ. | lock out workers | وقف العمل |
| comp., MS | lock screen | شاشة القفل (The screen that appears when a user locks the PC) |
| comp., MS | lock screen | شاشة التأمين (The screen that appears when a user locks the PC) |
| pack. | lock seam | درزة الحصر |
| med. | lock-stitch suture | خِياطَةٌ اِقْتِفالِيَّة |
| comp., MS | Lock Tracking | تأمين التعقب (An option that turns on change tracking and lets you set a password to prevent unauthorized users from turning it off) |
| econ. | lock up capital | حبس رؤوس الأموال |
| econ. | lock up of capital | حبس روؤس الأموال |
| oil | lock washer | حلقة القفل |
| knit.goods | lock wool | صوف نفاية: صوف منخفض الدرجة |
| radio | phase lock loop | حلقة مقفلة للطور |
| comp., MS | rotation lock button | زر تأمين التدوير (The button or slider on tablets and convertible tablets that rotates the display) |
| comp., MS | SCROLL LOCK key | مفتاح SCROLL LOCK (On the IBM PC/XT and AT and compatible keyboards, a key on the top row of the numeric keypad that controls the effect of the cursor control keys and sometimes prevents the screen from scrolling. On the enhanced and Macintosh keyboards, this key is to the right of the function keys on the top row. Many modern applications ignore the Scroll Lock setting) |
| railw., sec.sys. | slide-chair point lock and detector | مكشاف وقفل نقطة التحويل ذات الكرسي الجانبي |