(baseball) playing the position of pitcher on a baseball team
"After warming up in the bullpen, the player stepped onto the mound to start pitching against the opposing team."
The act of throwing or casting.
"The pitcher warmed up by repeatedly pitching the ball to his catcher before the game started."
In plain English: Pitching is when you try to sell something by talking about how good it is and why people should buy it or use it.
"The pitching was so heavy that I had trouble walking straight."
present participle of pitch
"The salesperson spent all afternoon pitching his new software to potential clients."
In plain English: Pitching means trying hard to sell something by talking about its good points until someone buys it.
"The team is pitching their new product idea to potential investors today."