Obligatio, binding, [220].

Oc-ulus, [25].

Oculus, [28].

ὄγδοος and ὀκτώ, [230].

οἶδα and ἴσμεν, [40].

οἴκειο-ς, in the house, [94].

οἶος, one, [236].

Old, Aryan words for, [411].

—— ablatives, termination of, [44].

ὄμμα, [25].