brushback pitch

US /ˈbrʌʃbæk pɪtʃ/
UK /ˈbrʌʃbæk pɪtʃ/
"brushback pitch" picture
1.

a baseball pitch thrown intentionally close to a batter's body, usually as a warning or to intimidate them

:
The pitcher threw a brushback pitch to keep the batter from crowding the plate.
It was a clear brushback pitch, sending a message to the opposing team.