Where does “cadarço” come from?

cadarço (Portuguese) comes from Spanish cadarzo, from Ancient Greek ἀκάθαρτος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

cadarço (Portuguese): floss silk thread or string made from cocoon dregs or other types of silk waste

Definitions

floss silk thread or string made from cocoon dregs or other types of silk waste

Ancestry of “cadarço”, step by step

Step	Language	Word	Meaning
1	Spanish	cadarzo	—
2	Ancient Greek	ἀκάθαρτος	foul, unclean; impure; not fit for cleansing
3	Ancient Greek	ἀ-	The alpha privativum, used to make words that...
4	Proto-Hellenic	hə-	same; together
5	Proto-Indo-European	sm̥-	one; with, together
6	Proto-Indo-European	sem-	together, one

Every word from Proto-Indo-European sem- →Every word from Ancient Greek ἀ- →Every word from Proto-Indo-European sm̥- →