placardglossary / PLACARD placard (plak-ahrd orplak-[schwa]rd).1. Hist. An official document, such as a license or permit.2. An advertisement posted in a public place. 词条贡献者 双语律师Howard,毕业于法国一流的高级翻译学院,擅长翻译各类与欧美消费者隐私法规相关的法律文件。