1 [T] fold sth (up) to bend one part of sth over another part in order to make it smaller, tidier, etc 折迭: He folded the letter into three before putting it into the envelope. 他把信迭了三折，然后放进信封里。Fold up your clothes neatly, please. 请把衣服折迭整齐。 [OPP] unfold 反义词为unfold

2 [I] fold (up) to be able to be made smaller in order to be carried or stored more easily 可以折迭: This table folds up flat. 这张桌子可以折迭起来。a folding bed 折迭床

3 [I] fold A in B;fold B round/over A to put sth around sth else 包；裹: I folded the photos in a sheet of paper and put them away. 我用一张纸把照片包好收起来。

4 [I] (used about a business, a play in the theatre, etc) to close because it is a failure （指企业、戏剧等）因失败而结束；倒闭；停演