a small brown bird with a pleasant song 百灵鸟；云雀 - [usually singular] (informal)
a thing that you do for fun or as a joke 嬉戏；玩乐；玩笑 - (British English, informal)
(used after another noun 用于另一名词后 an activity that you think is a waste of time or that you do not take seriously （认为）浪费时间的活动；不受重视的活动
Word Originnoun sense 1 and be/get up with the lark. Old English lāferce, lǣwerce; related to Dutch leeuwerik and German Lerche; of unknown ultimate origin. noun senses 2 to 3 and blow/sod that for a lark. early 19th cent.: perhaps from dialect lake ‘play’, from Old Norse leika, but compare with skylark in the same sense, which is recorded earlier.
Idioms
be/get up with the lark
- (British English, old-fashioned)
to get out of bed very early in the morning 清晨早起；鸡鸣即起
blow that for a lark
(also taboo sod that for a lark)