Source : Webster's Revised Unabridged Dictionary (1913)

Stoor \Stoor\, v. i. [Cf. D. storen to disturb. Cf. {Stir}.]
   To rise in clouds, as dust. [Prov. Eng.]

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.]

         O stronge lady stoor, what doest thou?   --Chaucer.