Source : Webster's Revised Unabridged Dictionary (1913)

Bellflower \Bell"flow`er\, n. (Bot.)
   A plant of the genus Campanula; -- so named from its
   bell-shaped flowers.

Bellflower \Bell"flow`er\, n. [F. bellefleur, lit., beautiful
   flower.]
   A kind of apple. The yellow bellflower is a large, yellow
   winter apple. [Written also {bellefleur}.]

Source : WordNet®

bellflower
     n : any of various plants of the genus Campanula having blue or
         white bell-shaped flowers [syn: {campanula}]