II. oblong shield (shaped like a door), PSI4.428.36 (iii B.C.), Inscr. ap. Plu.Pyrrh.26, Callix.2; hence, of the Roman scutum (opp. ἀσπίς,= clipeus), Plb.2.30.3, 6.23.2, D.H.4.16, cf.Ep.Eph.6.16, Apollod. Poliorc.163.2, Arr.Tact.3.2, etc.
IV. Math., oval, Procl.in Euc.1 Deff.3,8.