χελών-ιον · chelōn-ion — LSJ
tortoise-shell
tortoise-shell, Arist. PA 671a32, Resp. 479a6 (v.l. χελωνιδίων), Ael. NA 7.16.
2 crabʼs shell
crabʼs shell, Plu. Pyth. 2.400a, Suid. s.v. Τενέδιος.
II arched part of the back, muscles of the back
arched part of the back, Poll. 2.177: pl., muscles of the back, prob. for χελύνια in LXX De. 34.7.
III part of a lock
part of a lock, IG 11(2).287A 46 (Delos, iii B. C.), Inscr.Délos 316.72 (iii B. C.), PTeb. 46.17 (ii B. C.), BGU 1028.20, 26 (ii A. D.), POxy. 113.4 (ii A. D.), Theognost. Can. 124, Sch. Od. 21.47.
2 arch, bow
arch or bow for releasing the string of the stomach-bow, Hero Bel. 77.11.
3 knob
knob against which the butt-ends of the arms of a torsion-engine rest, ib. 93.7.
4
prob. part of an irrigation machine, PLond. 3.1177.179 (ii A. D.); part of a crane in which the axle turns, Vitr. 10.2.2, al.