The Collaborative International Dictionary of English v.0.48:

Fleming \Flem"ing\, n.
   A native or inhabitant of Flanders.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Fleming
    n 1: British writer famous for writing spy novels about secret
         agent James Bond (1908-1964) [syn: Fleming, Ian
         Fleming, Ian Lancaster Fleming]
    2: Scottish bacteriologist who discovered penicillin (1881-1955)
       [syn: Fleming, Alexander Fleming, Sir Alexander
       Fleming]
    3: a native of Flanders or a Flemish-speaking Belgian