Meaning of public-interest law

pub'lic-in'ter•est law"

Pronunciation: [key]
  1. a branch of law that often utilizes class-action suits to protect the interest of a large group or of the public at large, as in matters relating to racial discrimination, air pollution, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.