Source : Webster's Revised Unabridged Dictionary (1913)

Lepidolite \Le*pid"o*lite\ (l[-e]*p[i^]d"[-o]*l[imac]t; 277), n.
   [Gr. lepi`s -i`dos, a scale + -lite: cf. F. l['e]pidolithe.]
   (Min.)
   A species of mica, of a lilac or rose-violet color,
   containing lithia. It usually occurs in masses consisting of
   small scales. See {Mica}.

Source : WordNet®

lepidolite
     n : a mineral of the mica group; an important source of lithium