Correct

通窍

/ tōng qiào /
Strokes

Example

As a Verb

understand things; be sensible/reasonable

1
shì
榆木
nǎodài
脑袋
  
,
tōngqiào
通窍
  

He is a dumb-bell and doesn't understand a thing.

2
Cōngmingrén
聪明人
shāojiā
稍加
zhǐdiǎn
指点
jiù
néng
tōngqiào
通窍
  

One word is enough to the wise.