KNUCKLEBALL

knuckleball, knuckler

(noun) a baseball pitch thrown with little speed or spin

Source: WordNet® 3.1

Etymology

Noun

knuckleball (plural knuckleballs)

(baseball) A pitch thrown with the ball gripped on the fingertips and released with no rotation, which travels over an unpredictable path to the plate due to micro-turbulence in the air.

(figurative) An event that is hard to predict.

Synonyms

• (baseball pitch): flutterball, floater, dancer, butterfly ball, ghostball, bug

Verb

knuckleball (third-person singular simple present knuckleballs, present participle knuckleballing, simple past and past participle knuckleballed)

(intransitive, baseball) To pitch knuckleballs.

Source: Wiktionary