The Collaborative International Dictionary of English v.0.48:

Shirl \Shirl\, a.
   Shrill. [Prov. Eng.] -- Halliwell.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shirl \Shirl\, n. (Min.)
   See Schorl.
   [1913 Webster]