Onion

Probably the most general associations with onions is they can make you cry. So this might be saying there is something going on in your life you might need to shed some tears over. May represent something we find it difficult to face. It sometimes represents the layers of your personality. Its symbolism possibly arises from its layer upon layer going into the centre.

Onions can be portrayed in dreams as a health aid or perhaps how your body deals with eating them. Being round the onion can represent wholeness and unity. Sometimes the onion is used instead of garlic to act against the powers of evil. See Core

If you dislike onions then it is pointing to feelings of dislike about something or someone.