from
The Collaborative International Dictionary of English v.0.48
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.
[1913 Webster] algaroth