The Collaborative International Dictionary of English v.0.48:

Nard \Nard\ (n[aum]rd), n. [AS., fr. L. nardus, Gr. na`rdos; cf.
   Heb. n[^e]rd, Per. nard, Scr. nalada.]
   1. (Bot.) An East Indian plant (Nardostachys Jatamansi) of
      the Valerian family, used from remote ages in Oriental
      perfumery.
      [1913 Webster]

   2. An ointment prepared partly from this plant. See
      Spikenard.
      [1913 Webster]

   3. (Bot.) A kind of grass (Nardus stricta) of little value,
      found in Europe and Asia.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nard
    n 1: an aromatic ointment used in antiquity [syn: nard,
         spikenard]