Source : Webster's Revised Unabridged Dictionary (1913)

Tillandsia \Til*land"si*a\, n. [NL., after Prof. Tillands, of
   Abo, in Finland.] (Bot.)
   An immense genus of epiphytic bromeliaceous plants confined
   to tropical and subtropical America. They usually bear a
   rosette of narrow overlapping basal leaves, which often hold
   a considerable quantity of water. The spicate or paniculate
   flowers have free perianth segments, and are often subtended
   by colored bracts. Also, a plant of this genus.

Tillandsia \Til*land"si*a\, n. [NL. So named after Prof.
   Tillands, of Abo, in Finland.] (Bot.)
   A genus of epiphytic endogenous plants found in the Southern
   United States and in tropical America. {Tillandsia
   usneoides}, called {long moss}, {black moss}, {Spanish moss},
   and {Florida moss}, has a very slender pendulous branching
   stem, and forms great hanging tufts on the branches of trees.
   It is often used for stuffing mattresses.

Source : WordNet®

Tillandsia
     n : large genus of epiphytic or terrestrial sparse-rooting
         tropical plants usually forming dense clumps or pendant
         masses [syn: {genus Tillandsia}]