folder
/ˈfəʊldə(r)/noun
1- a folding cover or holder, typically made of stiff paper or card, for storing loose papers（尤指硬纸或纸板制的）文件夹, 纸夹。
1.1
- an icon on a computer screen which can be used to access a directory containing related files or documents（计算机）文件夹图标。
1.2
- N. Amer. a folded leaflet or a booklet made of folded sheets of paper〈北美〉折叠式传单（或小册子）。