arrestavamo
Arrestavamo is a verb form in the Italian language. Specifically, it is the first-person plural imperfect indicative of the verb arrestare. The imperfect indicative tense in Italian is used to describe ongoing or habitual actions in the past, as well as states of being or descriptions in the past. Therefore, "arrestavamo" translates to "we were arresting" or "we used to arrest" in English.
The verb arrestare itself means to arrest or to detain, typically in the context of law enforcement.