A difficult problem or unexpected challenge.

A type of pitch in baseball that has a curve to it.

बेसबॉल में एक प्रकार की गेंद जो वक्र होती है

English Usage: "The pitcher threw a curveball that fooled the batter."

Hindi Usage: "पिचर ने एक ऐसी गेंद फेंकी जो बल्लेबाज को धोखा दे गई।"