dupion
Concise Oxford English Dictionary © 2008 Oxford University Press:
dupion /ˈdjuːpɪən/
▶noun a rough slubbed silk fabric woven from the threads of double cocoons.
– origin C19 (in the sense ‘double cocoon’): from Fr. doupion, from Ital. doppione, from doppio ‘double’.
'dupion' also found in these Oxford entries:

