Where does “κουράδα” come from?

κουράδα (Greek) comes from Ancient Greek σκωράδιον, from Ancient Greek σκῶρ, from Proto-Hellenic skṓr, from Proto-Indo-European sḱṓr, from Proto-Indo-European sóḱr̥, from Proto-Indo-European -r̥ — Derives nouns from roots, frequently mass nouns.

κουράδα (Greek): turd; Genitive singular form of κουράδας;...