1. To do something again from the beginning. That was an excellent rehearsal! Let's take a 10-minute break, and then we'll start afresh.
2. To begin something again with a fresh start or a new direction. The script wasn't coming together the way the producers wanted, so they scrapped the whole thing, hired some new writers, and started afresh.
See also: start
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.