alarm clock

US /əˈlɑːrm klɑːk/
UK /əˈlɑːrm klɑːk/
"alarm clock" picture
1.

будильник

a clock that can be set to wake a person at a particular time by sounding a buzzer or bell

:
I set my alarm clock for 6 AM.
Я поставил свой будильник на 6 утра.
The loud ringing of the alarm clock startled me awake.
Громкий звон будильника разбудил меня.