Correct

滴溜儿

/ dī liūr / 
Strokes

Example

As an Adjective

perfectly round

1
Dīliūr  
滴溜儿
gǔnyuán
滚圆

perfectly round

As an Adjective

turning very quickly

2
Tuóluó
陀螺
zài
在
dìshang
地上
dīliūr  
滴溜儿
zhuǎndòng
转动
  
。

The top is spinning fast on the ground.