knuckleball
knuck le ball |ˈnəkəlˌbôl ˈnəkəlbɔl |(also knuckler ) ▶noun Baseball a slow pitch that has virtually no spin and moves erratically, typically made by releasing the ball from between the thumb and the knuckles of the first joints of the index and middle finger. DERIVATIVES knuck le ball er noun
knuckle |ball |ˈnʌklbɔːl | ▶noun Baseball a slow pitch which moves erratically, made by releasing the ball from the knuckles of the first joints of the index and middle finger. DERIVATIVES knuckleballer noun