radio alarm clock
noun [ C ] uk/ˌreɪ.di.əʊ əˈlɑːm ˌklɒk/ us/ˌreɪ.di.oʊ əˈlɑːrm ˌklɑːk/ (also radio alarm); (also clock radio)
（通常指叫醒某人的）收音机闹钟，钟控收音机
a radio that can be switched on by a clock at a particular time, usually to wake someone up