The phrase "public nuisance" refers to any behavior, activity, or thing that causes annoyance, harm, or inconvenience to a large number of people in a community or neighborhood. It usually involves actions that disturb the peace, create risks to public safety, or interfere with the rights of others. Examples of public nuisances can include excessive noise, littering, pollution, illegal activities, or physical obstructions that impede public access or enjoyment.