1. neckspring - Noun
2. neckspring - Verb
neckspring (plural necksprings)
(gymnastics) A move in which the gymnast starts by lying on his or her back, moves as if into a backwards roll, but then whips the legs upward and forward while pushing off to land on the feet.
neckspring (third-person singular simple present necksprings, present participle neckspringing, simple past and past participle neckspringed)
(gymnastics) To perform a neckspring.