1. extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally; [syn: black catechu, catechu]
WordNet (r) 3.0 (2006):
black catechu
n 1: extract of the heartwood of Acacia catechu used for dyeing
and tanning and preserving fishnets and sails; formerly
used medicinally [syn: black catechu, catechu]