<p><strong>Adjective</strong></p><ul><li>of or relating to the number seven or forming a group of seven</li><li>septennial</li></ul><p><strong>Noun</strong></p><ul><li>plural: septenaries</li><li>a group or set of seven</li><li>a period of seven years</li><li>the number seven</li><li>in prosody, a line of seven feet</li></ul>