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

A container in which clothing is placed to be donated to charity organizations.

Unwilling to spend money; stingy

(of a video recording or broadcast) Having captions that can only be seen with the appropriate equipment.

set close together

A circuit through which electrons can flow. / A complete electric circuit around which current can flow.

reticent, secretive or uncommunicative

(informal) The temporary inability to think properly, or to remember something

That consists of a closed circuit

(biology) Any of several mechanisms that regulate the periodicity of biological functions. / The progression from puberty to menopause during which a woman can bear children.