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).
[1913 Webster]