Source : Webster's Revised Unabridged Dictionary (1913)

Robinia \Ro*bin"i*a\, n. [NL. So called after Jean Robin, a
   French herbalist.] (Bot.)
   A genus of leguminous trees including the common locust of
   North America ({Robinia Pseudocacia}).

Source : WordNet®

Robinia
     n : deciduous flowering trees and shrubs [syn: {genus Robinia}]