The Collaborative International Dictionary of English v.0.48:

Five-finger \Five"-fin`ger\ (f[imac]v"-f[i^][ng]`g[~e]r), n.
   1. (Bot.) See Cinquefoil.
      [1913 Webster]

   2. (Zool.) A starfish with five rays, esp. Asterias rubens.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Starfish \Star"fish`\ (-f[i^]sh`), n.
   1. (Zool.) Any one of numerous species of echinoderms
      belonging to the class Asterioidea, in which the body is
      star-shaped and usually has five rays, though the number
      of rays varies from five to forty or more. The rays are
      often long, but are sometimes so short as to appear only
      as angles to the disklike body. Called also sea star,
      five-finger, and stellerid.
      [1913 Webster]

   Note: The ophiuroids are also sometimes called starfishes.
         See Brittle star, and Ophiuroidea.
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   2. (Zool.) The dollar fish, or butterfish.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cinquefoil \Cinque"foil`\, n. [Cinque five + foil, F. feuille
   leaf. See Foil.]
   1. (Bot.) The name of several different species of the genus
      Potentilla; -- also called five-finger, because of the
      resemblance of its leaves to the fingers of the hand.
      [1913 Webster]

   2. (Arch.) An ornamental foliation having five points or
      cups, used in windows, panels, etc. --Gwilt.
      [1913 Webster]

   Marsh cinquefoil, the Potentilla palustris, a plant with
      purple flowers which grows in fresh-water marshes.
      [1913 Webster]

WordNet (r) 3.0 (2006):

five-finger
    n 1: any of a numerous plants grown for their five-petaled
         flowers; abundant in temperate regions; alleged to have
         medicinal properties [syn: cinquefoil, five-finger]