noun
slow curve
A baseball pitch: a curveball thrown with reduced speed to disrupt the batter's timing.
彼はスローカーブで打者を打ち取った。
He got the batter out with a slow curve.
Variant with interpunct; less common in running text.
カーブ is a general curveball; スローカーブ specifically emphasizes a slower, looping version.
Loanword from English 'slow curve'.