This is the 742nd most frequent Arabic word.
تستخدم
"تستخدم" means "use" or "utilize."
In this sentence, 'تستخدم' implies utilizing a tool or instrument to accomplish an action, specifically writing letters with a pen.
تستخدم القلم لكتابة الرسائل.
You use the pen to write letters.
Here, 'تستخدم' denotes employing a resource, like time, for a purposeful activity.
تستخدم الأم الوقت لتعليم أطفالها.
The mother makes use of the time to teach her children.
In this context, 'تستخدم' describes the general application of a technique or method for a specific purpose.