The Collaborative International Dictionary of English v.0.48:

Cumberland \Cumberland\, Cumberland River \Cumberland
River\prop. n.
   a tributary of the Ohio River.

   Syn: .
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cumberland
    n 1: English general; son of George II; fought unsuccessfully in
         the battle of Fontenoy (1721-1765) [syn: Cumberland,
         William Augustus, Duke of Cumberland, Butcher
         Cumberland]
    2: a river that rises in southeastern Kentucky and flows
       westward through northern Tennessee to become a tributary of
       the Ohio River in southwestern Kentucky [syn: Cumberland,
       Cumberland River]