a mixture of different things

The museum houses a fascinating miscellany of nautical treasures. 这家博物馆收藏了一批令人着迷的各式航海珍宝。

a book containing a collection of pieces of writing either by different writers or by one writer on different subjects

She's just finished editing "A Miscellany of English Cookery". 她刚刚完成了《英国烹饪术》一书的编辑工作。