σάκος

A. σάκευς Hes. Sc. 334 (Cretan word acc. to AB 1096):—shield, Il. 7.222, 18.478, 20.268, Hdt. 1.52, etc.: it was concave, and hence sts. used as a vessel to hold liquid, A. Th. 540.

2. metaph., shield, defence, βωμός, ἄρρηκτον ς. A. Supp. 190. (Prob. cogn. with Skt. tvác- 'skin, hide'.)