Correct

愣劲儿

/ lèng jìnr / 
Strokes

Definition

dash/pep/vigor

Example

As a Noun

pep; dash; drive; vigour

1
Zhèxiē
这些
xiǎohuǒzi
小伙子
zhēn
真
yǒu
有
gǔzǐ
股子
lèng
愣
jìnr  
劲儿
  
。

These boys are full of pep/drive.