Source : Webster's Revised Unabridged Dictionary (1913)

Panicle \Pan"i*cle\, n. [L. panicula a tuft on plants, dim. of
   panus the thread wound upon the bobbin in a shuttle; cf. Gr.
   ?, ?; prob. akin to E. pane: cf. F. panicule. See 2d {Pane}.]
   (Bot.)
   A pyramidal form of inflorescence, in which the cluster is
   loosely branched below and gradually simpler toward the end.

Source : WordNet®

panicle
     n : compound raceme or branched cluster of flowers