Ortolan, [647a]

Ὄρυζον, Oryza, [763b], [764a]

Osbet, [960a]

Osfour, [780a]

Otta, Ottah, Otter, [647a]

Otto, Ottor, [647a], [243a]

Oude, Oudh, [647b], [465b]

Ouran-Outang, Ourang-outang, [644b], [a]

Ourdy, [640b]

Outcry, [648a]