sliver
noun [ C ] formal uk/ˈslɪv.ər/ us/ˈslɪv.ɚ/
碎片，薄片
a very small, thin piece of something, usually broken off something larger
a sliver of glass 一块玻璃碎片
Just a sliver of cake for me, please - I shouldn't really be having any. 只要一小块蛋糕——我真的不该吃的。
Synonyms: fragment shardsplinter