alarm clock

1. 1.

   a clock that wakes a sleeper at some preset time

   Synonymsalarm

   Broaderclock

Questions about alarm clock

What does alarm clock mean?

alarm clock means "a clock that wakes a sleeper at some preset time".

What is another word for alarm clock?

Close synonyms include alarm. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is alarm clock a common word?

alarm clock is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.