1. To ask or plead for something, especially a superstitious charm or omen, to make one's wish a reality. I always used to wish on the first star of the night when I was a kid. People from all over the country come to the idol, wishing on it to better their lives in some way or another.

2. To desire that some person, situation, or circumstance, especially a negative one, happen to or be imposed or foisted upon someone else. Typically used in negative constructions. In this usage, a noun or pronoun is used between "wish" and "on." I wouldn't wish the death of a child on my worst enemy. No, I wouldn't wish such a difficult task on you. I just don't see the point in wishing bad things on anyone else.