The Collaborative International Dictionary of English v.0.48:

Relegation \Rel`e*ga"tion\ (-g?"sh?n), n. [L. relegatio: cf. F.
   rel['e]gation.]
   The act of relegating, or the state of being relegated;
   removal; banishment; exile.
   [1913 Webster]

WordNet (r) 3.0 (2006):

relegation
    n 1: authorizing subordinates to make certain decisions [syn:
         delegating, delegation, relegating, relegation,
         deputation]
    2: the act of assigning (someone or something) to a particular
       class or category
    3: mild banishment; consignment to an inferior position; "he has
       been relegated to a post in Siberia"