A greeting, salute, or expression of respect to someone addressed to someone while one is being recorded or broadcast, as on radio, television, or the internet. Real quick, I just want to give a shout to my manager Sarah—without her, I never would have gotten this opportunity. While you're on the line, is there anyone you'd like to give a shout to, such as family or friends?
See also: shout
shout/proclaim from the housetops
To make known publicly.