from the GNU version of the Collaborative International Dictionary of English
- The caoutchouc obtained from the South American euphorbiaceous tree Hevea brasiliensis, hence called the Pará rubber tree, from the Brazilian river and seaport named Pará; also, the similar product of other species of Hevea. It is usually exported in flat round cakes, and is a chief variety of commercial India rubber.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a type of natural rubber obtained from tropical South American trees
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