What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?

Occasionally you will see a baseball pitcher or catcher signal to one another with a "hurry up" motion. It's a simple motion but hard to describe. Essentially they just make a circular motion with their index finger. It doesn't always seem to mean hurry up though, because sometimes they do it in situations where hurrying up wouldn't really make sense (i.e., no runners on and the batter isn't even in the batter's box yet). Just wondering what that signal means.What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?I think what you're describing is when the pitcher wants the catcher to go through the signs again.What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?
It means the catcher needs to go through the signs again, the signs that he puts down to tell the pitcher what kind of pitch he should throw.What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?Run thru the pitch options again

The catcher is actually in charge of the game, he is the only one who can see the whole field.What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?
It means that the catcher wants to run through the signs again with pitcher.What does it mean when a baseball pitcher (and sometimes the catcher) makes a "hurry up" motion with his hand?The pitcher wants to see the signs the catcher gave him again.