The Collaborative International Dictionary of English v.0.48:

Jew \Jew\ (j[=u] or j[udd]; 277), n. [OF. Juis, pl., F. Juif, L.
   Judaeus, Gr. 'Ioydai^os, fr. 'Ioydai`a the country of the
   Jews, Judea, fr. Heb. Y[e^]h[=u]d[=a]h Judah, son of Jacob.
   Cf. Judaic.]
   1. Originally, one belonging to the tribe or kingdom of
      Judah; after the return from the Babylonish captivity, any
      member of the new state; a Hebrew; an Israelite.
      [1913 Webster]

   2. An adherent of Judaism.
      [PJC]

   Jew's frankincense, gum styrax, or benzoin.

   Jew's mallow (Bot.), an annual herb (Corchorus olitorius)
      cultivated in Syria and Egypt as a pot herb, and in India
      for its fiber.

   Jew's pitch, asphaltum; bitumen.

   The Wandering Jew, an imaginary personage, who, for his
      cruelty to Christ during his passion, is doomed to wander
      on the earth till Christ's second coming.

   Wandering Jew, any of several house plants of the genera
      Zebrina and Tradescantia having white-striped leaves,
      especially the creeping plants Zebrina pendula and
      Tradescantia fluminensis.
      [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

Wandering \Wan"der*ing\,
   a. & n. from Wander, v.
   [1913 Webster]

   Wandering albatross (Zool.), the great white albatross. See
      Illust. of Albatross.

   Wandering cell (Physiol.), an animal cell which possesses
      the power of spontaneous movement, as one of the white
      corpuscles of the blood.

   Wandering Jew (Bot.), any one of several creeping species
      of Tradescantia, which have alternate, pointed leaves,
      and a soft, herbaceous stem which roots freely at the
      joints. They are commonly cultivated in hanging baskets,
      window boxes, etc.

   Wandering kidney (Med.), a morbid condition in which one
      kidney, or, rarely, both kidneys, can be moved in certain
      directions; -- called also floating kidney, movable
      kidney.

   Wandering liver (Med.), a morbid condition of the liver,
      similar to wandering kidney.

   Wandering mouse (Zool.), the whitefooted, or deer, mouse.
      See Illust. of Mouse.

   Wandering spider (Zool.), any one of a tribe of spiders
      that wander about in search of their prey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Wandering Jew
    n 1: a legendary Jew condemned to roam the world for mocking
         Jesus at the Crucifixion