I. ˈsmoke aˌlarm BrE AmE ( also smoke detector ) noun [countable]
a piece of electronic equipment which warns you when there is smoke or fire in a building:
The smoke alarm went off.
II. ˈsmoke deˌtector BrE AmE noun [countable]
a ↑ smoke alarm
I. ˈsmoke aˌlarm BrE AmE ( also smoke detector ) noun [countable]
a piece of electronic equipment which warns you when there is smoke or fire in a building:
The smoke alarm went off.
II. ˈsmoke deˌtector BrE AmE noun [countable]
a ↑ smoke alarm
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012