sexennis, e, adj. [sex-annus],
of six years , six years old : erus, Plaut. Poen. 4, 2, 80; 5, 2, 27: cervi, Plin. 8, 32, 50, § 116: sexenni die, after six years , an interval of six years , Caes. B. C. 3, 20.
sexennis e, adj.sex+annus, of six years, six years old : sexenni die, after six years , Cs. ...
An Elementary Latin Dictionary