What does antispastic mean?
The definition of antispastic
An`ti*spas”tic, a.
Etym: [Gr. Antispast.] (Med.)
(a) Believed to cause a revulsion of fluids or of humors from one part to another. [Obs.]
(b) Counteracting spasms; antispasmodic.
— n.

An antispastic agent.