noun
or dou·pi·o·ni also du·pi·o·ni ˌdüpēˈōnē ; or dou·pi·on or du·pi·on ˈdüpēˌōn
( -s )
Etymology: French & Italian; French doupion, from Italian doppione (plural doppioni ) double cocoon made by two silkworms, aug. of doppio double, from Latin duplus — more at double
1. : a usually large and uneven double silk thread reeled usually from two united cocoons and used in various fabrics (as shantung and pongee)
2. : a fabric of douppioni yarn