Source : Webster's Revised Unabridged Dictionary (1913)

Liriodendron \Lir`i*o*den"dron\
   (l[i^]r`[i^]*[-o]*d[e^]n"dr[o^]n), n.; pl. {Liriodendra}
   (-dr[.a]). [NL., fr. Gr. lei`rion lily + de`ndron tree.]
   (Bot.)
   A genus of large and very beautiful trees of North America,
   having smooth, shining leaves, and handsome, tuliplike
   flowers; tulip tree; whitewood; -- called also {canoewood}.
   {Liriodendron tulipifera} is the only extant species, but
   there were several others in the Cretaceous epoch.

Source : WordNet®

Liriodendron tulipifera
     n : tall North American deciduous timber tree having large
         tulip-shaped greenish yellow flowers and conelike fruit;
         yields soft white woods used especially for cabinet work
         [syn: {tulip tree}, {tulip poplar}, {yellow poplar}, {canary
         whitewood}]