The Collaborative International Dictionary of English v.0.48:

Stoor \Stoor\, Stor \Stor\, a. [AS. st[=o]r; akin to LG. stur,
   Icel. st[=o]rr.]
   Strong; powerful; hardy; bold; audacious. [Obs. or Scot.]
   [1913 Webster]

         O stronge lady stoor, what doest thou?   --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Stor \Stor\, a.
   See Stoor. [Obs.] --Chaucer.
   [1913 Webster]