The Collaborative International Dictionary of English v.0.48:

Rivage \Riv"age\, n. [F., fr. L. ripa bank, shore.]
   1. A bank, shore, or coast. [Archaic] --Spenser.
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            From the green rivage many a fall
            Of diamond rillets musical.           --Tennyson.
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   2. (O.Eng.Law) A duty paid to the crown for the passage of
      vessels on certain rivers.
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