Source : Webster's Revised Unabridged Dictionary (1913)

Algaroba \Al`ga*ro"ba\, n. [Sp. algarroba, fr. Ar. al-kharr?bah.
   Cf. {Carob}.] (Bot.)
   (a) The Carob, a leguminous tree of the Mediterranean region;
       also, its edible beans or pods, called {St. John's
       bread}.
   (b) The Honey mesquite ({Prosopis juliflora}), a small tree
       found from California to Buenos Ayres; also, its sweet,
       pulpy pods. A valuable gum, resembling gum arabic, is
       collected from the tree in Texas and Mexico.