generation gap(redirected from a generation gap)
The difference of opinions and attitudes, especially in relation to social changes and politics, that develop as each generation changes from the one before it. Attitudes toward gay marriage reflects a clear generation gap on the issue today.
A broad difference in values and attitudes between one generation and another, especially between parents and their children. For example, There's a real generation gap in their choice of music, restaurants, clothing-you name it . [1960s"