what does it mean to broadcast?

what broadcast means to me is that people either share there feelings or what they like for people to know.also people broadcast or share the new that happens in the moment like threw the radio or television or things like that. but broadcasting does not always have to do with serious things happening in the world it could do with cartoons or music. also with entertainment like in a movie or short film or a t.v. show.this is what broadcast means to me.