: to send out (signals, programs, etc.) by radio or television
: to tell (something that is private or secret) to many people
: to throw (something, such as seeds) across a wide area of the ground
: a radio or television program
: the act of sending out radio or television signals : the act of broadcasting something
What made you want to look up broadcast? Please tell us where you read or heard it (including the quote, if possible).