noun (plural quebrachos)
A South American tree whose timber and bark are a rich source of tannin.
- Genera Aspidosperma (family Apocynaceae) and Schinopsis (family Anacardiaceae).
- Ring dimensions were measured with dial calipers and results expressed as % equivalents to an 8-point standard curve of crude quebracho tannin.
- The woods are composed of the ‘red’ quebracho reaching some 15 m in height.
- The red quebracho grows only in the jungles of the Gran Chaco, an area along the banks of the Paraguay River.
Late 19th century: from Spanish, from quebrar 'to break' + hacha 'ax'.
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