clock radio

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A radio having a built-in alarm clock that can be set to turn the radio on automatically.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An alarm clock that includes a radio; a radio alarm clock

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a radio that includes a clock that can be set to turn it on automatically