First-generation students (FGS) are a population that has received increasing attention, but the term "first-generation student" has been inconsistently defined. Such inconsistency creates challenges not only for research, but for students themselves, many of whom may find they meet the FGS definition in one institutional context, but not another. In this study, we analyze how the term "first-generation student" is defined on the public websites of colleges and universities in the United States and Canada and discuss implications for students and academic libraries.