![foul pole foul pole](https://www.tekportal.net/wp-content/uploads/2019/01/foul-pole.jpg)
foul pole noun Baseball.
- either of two poles, one on each foul line, being the vertical continuation of the outfield fence or wall, used by the umpire as a sight line in determining whether a fly ball hit near the foul line is a fair or foul ball.
foul pole noun Baseball.