1A picture or photograph mounted between a piece of glass and a sheet of card (or two pieces of glass) stuck together at the edges with adhesive tape.
2archaic A master key.
Late 17th century: from French, literally 'passes everywhere'.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。