Clavis

• (n.) A key; a glossary.
Found on http://thinkexist.com/dictionary/meaning/clavis/

Clavis

Cla'vis noun ; plural Latin Claves , English Clavises . [ Latin ] A key; a glossary.
Found on http://www.encyclo.co.uk/webster/C/89

clavis

key; glossary; index; legend
Found on http://phrontistery.info/c.html
No exact match found