| 1. copyright notice or legal instrument that grants any person the rights for free use or change and reproduction of the product; (Computers) condition stipulated when software is distributed which indicates that users are able to copy the software freely or change the source code and redistribute it to others. copyleft/kop'ee-left/ (a play on copyright) the copyright notice and general public license applying to the works of the free software foundation, granting reuse and reproduction rights to everyone |