tapered
adj. 锥形的
v. 逐渐变少（taper 的过去式和过去分词）
例句
"Obelisks" (tall four-sided tapered monuments) were carefully constructed and even purposefully geographically located around 3500 BC.
“方尖碑”（高大的四边锥形纪念碑）是在公元前3500年精心建造的，甚至在地理位置上也是有目的的。
The tail tapered to a rounded tip.
尾部越来越细，最后成了个圆尖。
《牛津词典》
The pots are wide at the base and tapered at the top.
这些壶底部粗，顶部细。
