The Collaborative International Dictionary of English v.0.48:

Loire \Loire\ prop. n.
   a French river which flows into the North Atlantic.

   Syn: Loire River.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Loire
    n 1: the longest French river; rises in the Massif Central and
         flows north and west to the Atlantic Ocean [syn: Loire,
         Loire River]