The Collaborative International Dictionary of English v.0.48:

Bordrag \Bord"rag\, Bordraging \Bord"ra`ging\, n. [Perh. from
   OE. bord, for border + raging. Cf. Bodrage.]
   An incursion upon the borders of a country; a raid. [Obs.]
   --Spenser.
   [1913 Webster]