Proto-IE: *klāw-
Meaning: key, hook, nail
Old Greek: ep., ion. klǟís, -ī̂dos, att. kléi̯s, älter klǟ̂i̯s, -dós f. `Pflock, Ruderpflock; Querriegel, Haken, Schlüssel, Schlüsselbein'; dor. klāi̯ks (Theocr.), epidaur., mess. gen. klaikos, acc. -ka `id.'
Latin: clāvis, -is f. `Schlüssel, Riegel, Stange der Kelter, Treibkloben'; clāvus, -ī `Nagel, Pflock; nagelförmiger Griff am Steuerruder'; claudō, -sī, -sum, -ere `schliesse, sperre zu, verschliesse'
Celtic: OIr clō, pl. clōi `Nagel', MCymr clo `Riegel, Verschluss', pl. cloeu `clavi', MBret clou `ferrement'
Russ. meaning: ключ, крючок, гвоздь
