dejeuner

from WordNet (r) 3.0 (2006)

dejeuner
    n 1: a midday meal [syn: {lunch}, {luncheon}, {tiffin},
         {dejeuner}]

from The Collaborative International Dictionary of English v.0.48

D'ejeuner \D['e]`jeu`ner"\, n. [F. d['e]jeuner breakfast, as a
   verb, to breakfast. Cf. {Dinner}.]
   A breakfast; sometimes, also, a lunch or collation.
   [1913 Webster]

from The Devil's Dictionary (1881-1906)

DEJEUNER, n.  The breakfast of an American who has been in Paris. 
Variously pronounced.

[email protected]