Jailer/ˈdʒeɪlər/ Definition 1 of 1Pro Tip 1/3Power Dynamics Reflects authority over prisoners and responsibility within the penal system. The jailer sternly surveyed the inmates during roll call. Pro Tip 2/3Not Police Jailers oversee inmates, unlike police who enforce laws in the community. After arrest, the police handed the suspect to the jailer for detention. Pro Tip 3/3Controlled Access A jailer controls access to jail areas, managing security and movement. The jailer unlocked the door to the recreation area for the prisoners.