
1) Ancient Greek lyre 2) String instrument
Found on
https://www.crosswordclues.com/clue/chelys

The chelys (χέλυς, testudo), was a stringed musical instrument, the common lyre of the ancient Greeks, which had a convex back of tortoiseshell or of wood shaped like the shell. The word chelys was used in allusion to the oldest lyre of the Greeks, which was said to have been invented by Hermes. According to the Homeric Hymn to Hermes (475) h...
Found on
http://en.wikipedia.org/wiki/Chelys
No exact match found.