Source : Webster's Revised Unabridged Dictionary (1913)

Arboret \Ar"bo*ret\, n. [OF. arboret, dim. of arbre tree, L.
   arbor]
   A small tree or shrub. [Obs.] --Spenser.

         Among thick-woven arborets, and flowers Imbordered on
         each bank.                               --Milton.