What is a Date?

I was searching around for interesting dating statistics, and landed on one of my favorite sites...wikipedia. Here's how they define dating:

Dating is any social activity performed as a pair or even a group with the aim of each assessing the other's suitability as their partner in an intimate relationship or as a spouse. The word refers to the act of agreeing on a time and "date" when a pair can meet and engage in some social activity.

How do you define dating?