shot caller(redirected from a shot-caller)
One who dictates how a situation or agenda proceeds, as from a position of authority in a gang, group, or organization. The boss is the shot-caller around here—we have to do what he says. It took me a long time to become the shot caller, kid. You don't get this kind of power overnight.
See also: shot
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.