Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty. Definition of detail an individual fact or item, a small detachment of troops or police officers given a special duty.