1
- mass noun soft fibres from fabrics such as wool or cotton which accumulate in small light clumps绒毛, 软毛：
he brushed his sleeve to remove the fluff.
他刷了刷衣袖, 去掉绒毛。
1.1
- any soft downy substance, especially the fur or feathers of a young mammal or bird绒毛似的东西（尤指幼小哺乳动物软毛或小鸟羽毛）。
1.2
- figurative entertainment or writing perceived as trivial or superficial〈喻〉空洞（或肤浅）的娱乐节目（或作品）：
the film is a piece of typical Hollywood fluff.
这部电影是典型的好莱坞闹剧。
2
- informal a mistake made in speaking or playing music, or by an actor in delivering their lines〈非正式〉（说话、演奏或台词中的）错误。
with obj.
1
- make (something) appear fuller and softer, typically by shaking or brushing it把…拍松（或抖松、掸松）：
I fluffed up the pillows.
我把枕头抖松了。
2
- informal fail to perform or accomplish (something) successfully or well (used especially in a sporting or acting context)〈非正式〉（尤指体育、表演）出错, 失误：
the extra fluffed his only line.
临时演员把他惟一的一句台词念错了。
词源
late 18th cent.: probably a dialect alteration of 16th-cent. flue 'down, nap, fluff', apparently from Flemish vluwe.