χέλυς,ῠος,ἡ,
A. tortoise,
h.Merc. 33 .
2. lyre(since Hermes made the first lyre by stretching strings on a tortoise's shell, which acted as a sounding-board), ib. 25 , 153 , Sapph. 45 , A. Fr. 314 ; καθ' ἑπτάτονον ὀρείαν χ.
E. Alc. 448
(lyr.), cf. HF 683 (lyr.).
3. the constellationLyra,
Arat. 268 .
II. arched breast, chest,from itslikeness of shape to the back of a tortoise, Hp. Anat. 1 , E. El. 837 ; cf. χελώνιον
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. [ῡin nom. and acc. sg., h.Merc. 33 , 153 ; laterῠ, Call. Ap. 16 , Arat. 268 , Opp. H. 5.404 .] (Cf. OSlav.žely'tortoise'.)