The Collaborative International Dictionary of English v.0.48:

Ray \Ray\, n. [F. raie, L. raia. Cf. Roach.] (Zool.)
   (a) Any one of numerous elasmobranch fishes of the order
       Raiae, including the skates, torpedoes, sawfishes, etc.
   (b) In a restricted sense, any of the broad, flat,
       narrow-tailed species, as the skates and sting rays. See
       Skate.
       [1913 Webster]

   Bishop ray, a yellow-spotted, long-tailed eagle ray
      (Aetobatus narinari syn. Stoasodon narinari) of the
      Southern United States and the West Indies; also called
      the spotted eagle ray and white-spotted eagle ray.

   Butterfly ray, a short-tailed American sting ray
      (Pteroplatea Maclura), having very broad pectoral fins.


   Devil ray. See Sea Devil.

   Eagle ray, any large ray of the family Myliobatidae, or
      Aetobatidae. The common European species (Myliobatis
      aquila) is called also whip ray, and miller.

   Electric ray, or Cramp ray, a torpedo.

   Starry ray, a common European skate (Raia radiata).

   Sting ray, any one of numerous species of rays of the
      family Trygonidae having one or more large, sharp,
      barbed dorsal spines on the whiplike tail. Called also
      stingaree.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Miller \Mill"er\ (m[i^]l"[~e]r), n.
   1. One who keeps or attends a flour mill or gristmill.
      [1913 Webster]

   2. A milling machine.
      [1913 Webster]

   3. (Zool.)
      (a) A moth or lepidopterous insect; -- so called because
          the wings appear as if covered with white dust or
          powder, like a miller's clothes. Called also moth
          miller.
      (b) The eagle ray.
      (c) The hen harrier. [Prov. Eng.]
          [1913 Webster]

   Miller's thumb. (Zool.)
      (a) A small fresh-water fish of the genus Uranidea
          (formerly Cottus), as the European species
          (Uranidea gobio), and the American (Uranidea
          gracilis); -- called also bullhead.
      (b) A small bird, as the gold-crest, chiff-chaff, and
          long-tailed tit. [Prov. Eng.]
          [1913 Webster]

WordNet (r) 3.0 (2006):

Miller
    n 1: United States bandleader of a popular big band (1909-1944)
         [syn: Miller, Glenn Miller, Alton Glenn Miller]
    2: United States novelist whose novels were originally banned as
       pornographic (1891-1980) [syn: Miller, Henry Miller,
       Henry Valentine Miller]
    3: United States playwright (1915-2005) [syn: Miller, Arthur
       Miller]
    4: someone who works in a mill (especially a grain mill)
    5: machine tool in which metal that is secured to a carriage is
       fed against rotating cutters that shape it [syn: miller,
       milling machine]
    6: any of various moths that have powdery wings [syn: moth
       miller, miller]