Green’s Dictionary of Slang

1. (US black) to abruptly stop someone from moving or carrying on with what they are doing.

1967		(con. 1930s) R. McKenna Sons of Martha 144: Hey, sweetheart! [...] I got shortstopped for a drink.
1977		R. Dennis Hump’s First Case 1346: ‘[H]e has to find a way to shortstop her’.

2. (US) to take food as it is being passed to someone else at a meal.

1960, 1975

Wentworth & Flexner DAS.