daisy chain I. noun 1.: a string of daisies with stems linked to form a chain; specifically: such a chain carried by chosen students at a class day or other celebration in some women's colleges 2.: an interlinked series (as of events, items, or steps) < a daisy chain of middlemen — Christian Science Monitor > II. noun : a group sexual activity in which each person attends to the one in front while being attended to by the one behind