Does "onion" have a (proper) verb form?

приправлять луком means flavour with onions while натирать себе глаза луком means rub onions in your eyes

I have never used onion as a verb, but the first is implicit in the use of onioned as an adjective given by Oxford Dictionaries

Of food: cooked or served with onions, containing onions.

while George Bernard Shaw used the eye irritation sense in the preface to Three Plays for Puritans

But when your Shakespears and Thackerays huddle up the matter at the end by killing somebody and covering your eyes with the undertaker's handkerchief, duly onioned with some pathetic phrase, as The flight of angels sing thee to thy rest, or Adsum, or the like, I have no respect for them at all : such maudlin tricks may impose on tea-drunkards, not on me.