Definitions

1. noun

a person who sits in the stands and makes a distracting gesture, often with their arms crossed, behind a baseball player, usually to distract the player, especially the pitcher

“The home team’s Bartman was blamed for costing them the game.”

2. proper noun

a reference to Steve Bartman, the fan who interfered with a foul ball in a Chicago Cubs game in 2003

“The incident is still referred to as the ‘Bartman’ today.”