The Collaborative International Dictionary of English v.0.48:

Maigre \Mai"gre\, a. [F. See Meager.]
   Belonging to a fast day or fast; as, a maigre day. --Walpole.
   [1913 Webster]

   Maigre food (R. C. Ch.), food allowed to be eaten on fast
      days.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Meagre \Mea"gre\, n. [F. maigre.] (Zool.)
   A large European sciaenoid fish (Sciaena umbra or Sciaena
   aquila), having white bloodless flesh. It is valued as a
   food fish. [Written also maigre.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

maigre
    n 1: large European marine food fish [syn: maigre, maiger,
         Sciaena aquila]