Having the eyes filled with tears, as if by the effect of an onion applied to them.
Another possibility is onion eyed is a shakesperean term meaning whimpy.
Staring wide-eyed and rude and stupidly.
I think you mean "the green-eyed monster," which is slang for being jealous.
Yes, being cross-eyed can be a genetic trait. It can be inherited from one or both parents.
Onion being a monocot plant has fibrous root system
A Shakesperian insult is an instult written by Shakespear. For instance, one is "You toad-breathed onion eyed small mammal sucker!"
Onion being a monocot plant has fibrous root system
Cyclops - Greek for 'round-eyed' or 'wheel-eyed.'
If you mean the entire onion plant (click here). If you mean the cell of an onion (click here).
"The onion"
This means that you should cut an onion into small slivers for later in the recipe.
Black Eyed
It is an idiom. It means that you are sleepy.