Correct

入眠

/ rùmián /
Strokes

Definition

to fall asleep

Example

As a Verb

fall asleep; go to sleep

1
Zuówǎn
昨晚
tóuténg
头疼
  
,
nán
难以
mián
入眠
  

I couldn't fall asleep last night because of the headache.

As a Verb

(of silkworms) neither move nor eat