riffraff
['rifræf]
n. 乌合之众, 流氓, 渣滓, 垃圾
例句与用法：
She riffled through the magazine and found the humorous story for me.
她很快地翻着杂志为我从中找到那则幽默故事。
It only took him a few moments riffling through the records to find the fight name.
他飞快地翻动着记录，一会儿就找到了那个名字。
详细释义：
n.
(总称)乌合之众; 贱民
a.
微贱的