Arriere \Ar*riere"\, n. [F. arri[`e]re. See Arrear.]

``That which is behind''; the rear; -- chiefly used as an adjective in the sense of behind, rear, subordinate.

Arriere fee, Arriere fief, a fee or fief dependent on a superior fee, or a fee held of a feudatory.

Arriere vassal, the vassal of a vassal.

Source: Webster's Revised Unabridged Dictionary (1913)