Σιληνός

2. a figure of Silenus, used as a casket for precious pieces of sculpture, Pl. Smp. 215a, 215b. (Freq. written Σειλ‐, but Σιλ‐ in early Inscrr., IG 12.51 (v B.C.), Kretschmer Griech.Vaseninschr. p.132.)
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project