Source : Webster's Revised Unabridged Dictionary (1913)

Quebracho \Que*bra"cho\, n. [Sp.] (Bot.)
   A Chilian apocynaceous tree ({Aspidosperma Quebracho}); also,
   its bark, which is used as a febrifuge, and for dyspn[oe]a of
   the lung, or bronchial diseases; -- called also {white
   quebracho}, to distinguish it from the red quebracho, a
   Mexican anacardiaceous tree ({Loxopterygium Lorentzii}) whose
   bark is said to have similar properties. --J. Smith (Dict.
   Econ. Plants).