Source : Webster's Revised Unabridged Dictionary (1913)

Metrosideros \Met`ro*si*de"ros\, n. [NL., fr. Gr. ? heart of a
   tree + ? iron.] (Bot.)
   A myrtaceous genus of trees or shrubs, found in Australia and
   the South Sea Islands, and having very hard wood.
   Metrosideros vera is the true ironwood.