as a sign of the vocative case

interj., c. vocat., ; O in simple address (less freq. than in cl.; M, , 71); , , , ; expressing reproof, ; Pr. Ac 1:1 18:14 27:21 Ro 2:1 3 9:20 I Ti 6:20 Ja 2:20 in exclamations of surprise, etc.: , , , , ; c. nom. (Bl., § 33, 4), , , .† Mt 15:28 Lk 24:25 Ac 13:10 Ro 11:33 Ga 3:1 Mt 17:17 Mk 9:19 Lk 9:41

as a sign of the vocative case, O; as a note of exclamation, oh

O