Correct

厮

/ sī / 
Strokes

Definition

mutually/with one another/manservant/boy servant/guy (derog.)

Example

As a Noun

male servant

1
Xiǎosī
小厮

boy servant

As a Noun

fellow; guy

2
Zhè
这
  
/
nā
那
sī
厮

this/that guy