caoutchouc

[kou-choo k, kou-chook] /ˈkaʊ tʃʊk, kaʊˈtʃuk/
noun
1.
rubber1 (def 1).
2.
pure rubber.
Origin
1765-75; < French < Spanish cauchuc (now obsolete), probably ultimately < an Indian language of lowland tropical South America
British Dictionary definitions for caoutchouc

caoutchouc

/ˈkaʊtʃuːk; -tʃʊk; kaʊˈtʃuːk; -ˈtʃʊk/
noun
1.
another name for rubber1 (sense 1)
Word Origin
C18: from French, from obsolete Spanish cauchuc, from Quechua