Source : Webster's Revised Unabridged Dictionary (1913)

Morel \Mor"el\, n. [See {Morelle}.] (Bot.)
   1. Nightshade; -- so called from its blackish purple berries.
      [Written also {morelle}.]

   2. A kind of cherry. See {Morello}.

   {Great morel}, the deadly nightshade.

   {Petty morel}, the black nightshade. See {Nightshade}.

Source : WordNet®

petty morel
     n : unarmed woody rhizomatous perennial plant distinguished from
         wild sarsaparilla by more aromatic roots and panicled
         umbels; southeastern North America to Mexico [syn: {American
         spikenard}, {life-of-man}, {Aralia racemosa}]