The crossword solution for the term 'DROP THE BALL, E.G.' is ERR. This is an abbreviation of the verb 'to ERR, ' which means to make a mistake or do something wrong. It is often used in the phrase 'to ERR is human, ' which is a reminder that everyone makes mistakes and it is part of being human. In this context, 'drop the ball, e.g.' is referring to making a mistake or failing to do something correctly.