rough idea about (something)
rough idea about (something)
An approximate estimate or general conception (about something). There will of course be a lot more details when we get started for real, but these sketches should give you a rough idea about the design. I completed a similar program a few years ago, so I have a rough idea about what to expect.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.