servirsi
Servirsi is an Italian pronominal verb that means to use something or to avail oneself of a resource, often with a sense of taking what is available to accomplish a task or need. It can express routine usage (using tools, implements, or services) as well as more purposive or strategic usage, such as employing a method or excuse.
The core construction is servirsi di followed by the object: mi servo di una penna, ti servi
Nuances and related expressions
Servirsi di is more formal or precise than semplice usare, and it often foregrounds resource management or
Mi servo di una chiave per aprire la porta. Si è servito di una scusa per giustificarsi.