The Collaborative International Dictionary of English v.0.48:

Spasmodic \Spas"mod"ic\, a. [Gr. ?; ? a convulsion + ? likeness:
   cf. F. spasmotique.]
   1. (Med.) Of or pertaining to spasm; consisting in spasm;
      occuring in, or characterized by, spasms; as, a spasmodic
      asthma.
      [1913 Webster]

   2. Soon relaxed or exhausted; convulsive; intermittent; as,
      spasmodic zeal or industry.
      [1913 Webster]

   Spasmodic croup (Med.), an affection of childhood
      characterized by a stoppage of brathing developed suddenly
      and without fever, and produced by spasmodic contraction
      of the vocal cords. It is sometimes fatal. Called also
      laryngismus stridulus, and childcrowing.

   Spasmodic stricture, a stricture caused by muscular spasm
      without structural change. See Organic stricture, under
      Organic.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Childcrowing \Child"crow`ing\, n. (Med.)
   The crowing noise made by children affected with spasm of the
   laryngeal muscles; false croup.
   [1913 Webster]