1. To be, make oneself, or remain hidden or inconspicuous; to avoid being found, detected, or scrutinized by others. (Commonly misworded as "lay low.") I'm sorry I haven't been around to see you lately, but with the police investigating the company I thought it would be better to lie low and sing small for a while. Jim and Colby are laying low with the goods. Once the heat from the cops eases up, they'll send the stuff over to us.

2. By extension, to keep to oneself; to avoid interactions with others. I think I'm just going to lie low and sing small at home this weekend—I don't really feel like going out at all. I can't afford any more distractions ahead of my finals, so I need to lie low and sing small for the next couple of weeks.