I thought you asked what my transitional objects were but I see you actually asked what a transitional object is. A transitional object is an object that a child uses to deal with the pain of being temporarily separated from a loving parent. Like a blanket or stuffed animal. For some of us a T is the closest thing we will ever get to that kind of love. So a lot of ppl here use the phrase to refer to something either given to them by their T or associated with their T that comforts them between sessions