What Does A Promise Ring Mean?

Ok well it depends, but I do have a promise ring, and have had it for quite some time...even though I'm only 17. In a way it can be seen as a pre-engagement ring. I know alot of seniors in high school who get them or even some freshman/sophomores in college. What it means to me is that eventually we will be engaged, but considering our age it's probably best that we wait a few more years. I think that if you are young, but have been dating someone for a long time...like over 3 years...you may not be ready for an actual engagement but you do want some promise of an engagement to come. That way you know you aren't wasting your time. I know that if I were actually engaged right now my parents would flip even though I'll be 18 soon. So, if everything goes as planned...waited 3 years for a promise ring....wait another 3 for an engagement ring...and will hopefully get married soon after college.