noun
- Plural of caoutchouc; natural rubber or rubber material obtained from the latex of tropical trees.
Usage: archaic or technical; chiefly historical
Examples
- The caoutchoucs were harvested from the Amazon rainforest in the 19th century.
- Early manufacturers experimented with different caoutchoucs to improve tire durability.
- Colonial traders exported caoutchoucs to Europe for use in waterproof clothing.
- The chemist studied the properties of various caoutchoucs to develop synthetic rubber.