The Collaborative International Dictionary of English v.0.48:

Moony \Moon"y\, a.
   1. Of or pertaining to the moon.
      [1913 Webster]

            Soft and pale as the moony beam.      --J. R. Drake.
      [1913 Webster]

   2. Furnished with a moon; bearing a crescent.
      [1913 Webster]

            But soon the miscreant moony host
            Before the victor cross shall fly.    --Fenton.
      [1913 Webster]

   3. Silly; weakly sentimental. [Colloq.] --G. Eliot.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Moony \Moon"y\, prop. n.
   A follower of the Rev. Sun Myun Moon; a member of the
   Unification Church; -- often considered disparaging. [Also
   spelled Moonie.]
   [PJC]

WordNet (r) 3.0 (2006):

moony
    adj 1: lighted by moonlight; "the moonlit landscape" [syn:
           moonlit, moony] [ant: moonless]
    2: dreamy in mood or nature; "a woolgathering moment" [syn:
       dreamy, moony, woolgathering]