ojo, m., eye; darse de —, to conspire, have a secret understanding; en un abrir y cerrar de —s, in the twinkling of an eye; in an instant; hacer mal de —, to cast the evil eye; medirse con los —s, to scan each other.
ola, f., wave.
olmo, m., elm.
olor, m., odor; tener en — de santidad, to hold (or consider) as a saint.
olvidar, to forget.
olvido, m., oblivion, forgetfulness.
omnipotencia, f., omnipotence.
onda, f., wave.
ondina, f., undine, water-sprite.