A grade conferred upon officers in armed forces, police and intelligence agencies, typically denoted by particular insignia affixed to their uniforms.

A member of the rank and file.

(military, chiefly in the plural) A soldier who is not a commissioned officer.

One who is not expected to succeed or win, especially one who is unknown.

(mathematics) The number of independent cycles in a graph

(geology) The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.

(informal, business) A model of employee productivity in which workers are ranked into the top 20 percent, the adequate 70 percent, or the bottom 10 percent, and those in the bottom group are fired.

Belonging or pertaining to the rank and file.

Alternative spelling of rank and file

Synonym of taxi rank / (military) A group of aircraft that remain airborne in order to attack targets quickly when requested.