urchin
['ə:tʃin]
n.顽童, [动]海胆, 刺猬
例句与用法：
A street urchin.
街头流浪儿
A fine, sharp projection, as a spine of a sea urchin or a crystal.
针状物精细尖锐的突出物，如海胆的脊椎骨或水晶球
Those grubby urchins ran to me and asked for candy.
那群邋遢的小淘气们向我跑过来要糖果。
详细释义：
n.[C]
1. 小淘气; 顽童
2. 【主英】【动】猬
3. 【动】海胆