Answer: squawkbox

AnswerCrossword Clue
SQUAWKBOX

Intercom system

SQUAWKBOX

Speaker

SQUAWKBOX

Intercom speaker

SQUAWKBOX
Part of an intercom system: Slang.
SQUAWKBOX
Intercom, familiarly
SQUAWKBOXIntercom
SQUAWKBOXSpeaker of a sort
SQUAWKBOXPublic-address system
SQUAWKBOXPublic speaker