Family name origins & meanings
- German : nickname from eastern Middle High German klūc ‘wise’, ‘prudent’, or from the western form kluoc, which had the sense ‘noble’, ‘refined’; the word came into German from Middle Dutch cloec (see Klock) via Middle Low German klōk (see Kloke).
- Jewish (Ashkenazic) : nickname from German and Yiddish klug ‘clever’, ‘wise’.