put_to_sleep
1. [ verb ] help someone go to bed
Examples:

"Mother put the baby to sleep"

Related terms: put
2. [ verb ] kill gently, as with an injection
Synonyms: put_away
Examples:

"the cat was very ill and we had to put it to sleep"

Related terms: kill
3. [ verb ] (pharmacology,surgery) make unconscious by means of anesthetic drugs
Synonyms: anaesthetize put_under put_out anaesthetise anesthetise anesthetize
Examples:

"The patient must be anesthetized before the operation"

Related terms: bring_to drug etherize freeze chloroform block cocainize anesthetic sleep