ἔλυτρον · elytron — LSJ
covering
covering:
1 bow-case, sheath, mirror-case, case
bow-case, S. Fr. 1043 (pl.); sheath of a spear, Ar. Ach. 1120; mirror-case, IG 2.706A b13; χοᾶ ἐν ἐ. ib. 11 (2).219B 76 (Delos, iii B.C.); case of a shield, D.S. 20.11 (pl.).
2 sheath, shard, shell, lids
sheath of the spinal cord, Hp. Art. 45: the shard of a beetleʼs wing, Arist. HA 532a23; shell of a crab, Ael. NA 9.43; of the eye-lids, Arist. de An. 421b29; of the umbilical cord, Id. HA 586b23.
3 husk, capsule, glume
husk or capsule of seeds, J. AJ 3.7.6; the flowering glume of ζέα δίκοκκος, Dsc. 2.89.
4 the body, the case, shell
the body, as being the case or shell of the soul, Pl. R. 588e, Poet. ap. Luc. Demon. 44.
5 reservoir for water, tank
reservoir for water, Hdt. 1.185, 4.173, Paus. 2.27.7, al.; tank for fish, Palaeph. 27. (Cf. Skt. varútram ‘cloak’, varūtár- ‘protector’.) [ῠ Ar. l.c.]