ziska = silk (noun) (some things Google found for "ziska": a very common term; a last name, notably 15th century Czech general and Hussite leader John Ziska or Jan Žižka; title of a 1897 book by Marie Corelli which is subtitled The Problem of a Wicked Soul; user name; Ziska Architects & Associates of Ohio; Ziska Pharmaceuticals Ltd. of Bangladesh)
Word derivation for "silk":
Basque = zeta, Finnish = silkki
Miresua = ziska
This Miresua conlang word has been changed. The word for silk is now setki.