The Collaborative International Dictionary of English v.0.48:

Stridulous \Strid"u*lous\, a. [L. stridulus. See Strident.]
   Making a shrill, creaking sound. --Sir T. Browne.
   [1913 Webster]

         The Sarmatian boor driving his stridulous cart.
                                                  --Longfellow.
   [1913 Webster]

   Stridulous laryngitis (Med.), a form of croup, or
      laryngitis, in children, associated with dyspnoea,
      occurring usually at night, and marked by crowing or
      stridulous breathing.
      [1913 Webster]