B1[I or T]to bend something, especially paper or cloth, so that one part of it lies on the other part, or to be able to be bent in this way: I folded the letter (in half) and put it in an envelope.He had a neatly folded handkerchief in his jacket pocket.Will you help me to fold (up) the sheets?The table folds up when not in use.Making things more or less smooth or straight›[T]to wrap: She folded her baby in a blanket.He folded his arms around her.Enclosing, surrounding and immersingfold your arms›to bring your arms close to your chest and hold them togetherMaking things more or less smooth or straight›[T]to move a part of your body into a position where it is close to your body: She sat with her legs folded under her.Making things more or less smooth or straight