The Collaborative International Dictionary of English v.0.48:

Eugenia \Eu*ge"ni*a\ ([-u]*j[=e]"n[i^]*[.a]), n. [NL. Named in
   honor of Prince Eugene of Savoy.] (Bot.)
   A genus of myrtaceous plants, mostly of tropical countries,
   and including several aromatic trees and shrubs, among which
   are the trees which produce allspice and cloves of commerce.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Eugenia
    n 1: tropical trees and shrubs with aromatic leaves and often
         valuable hard wood [syn: Eugenia, genus Eugenia]