자다

1. sleep
To be in the state of taking a rest for a period of time with one's eyes closed and mental activities suspended.

2. stop
For a piece of machinery such as a clock to stop working.

3. be flattened
For something inflated to be pressed and become flat.

4. remain dormant
For a thing, etc. to remain unused and not serve its original purpose.

5. sleep with; have sex
For a man and a woman to engage in sexual intercourse.