oiseau, m., bird.
ombre, f., shadow.
on, one, they, you, we, people.
oncle, m., uncle.
opposer (s'), to be opposed, resist.
oppresseur, m., oppressor.
or, m., gold.
or, but, so, now, it came to pass that.
ordinaire, m., ordinary practice; adj., everyday, usual.
ordre, m., order, condition.