The Collaborative International Dictionary of English v.0.48:

Durant \Dur"ant\, n. [F. durant, p. pr. of durer to last. Cf.
   Durance.]
   See Durance, 3.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Durant
    n 1: United States historian (1885-1981) [syn: Durant, Will
         Durant, William James Durant]