copyleftglossary / COPYLEFT copyleft. Slang. A software license that allows users to modify or incorporate open-source code into larger pro-grams on the condition that the software containing the source code is publicly distributed without restrictions. 词条贡献者 双语律师Peter,毕业于法国一流的高级翻译学院,擅长翻译涉及基础建设领域的法律文件。