The Collaborative International Dictionary of English v.0.48:

Smoor \Smoor\, v. t. [AS. smorian; akin to D. & LG. smoren, G.
   schmoren to stew. Cf. Smother.]
   To suffocate or smother. [Written also smore.] [Obs. or
   Prov. Eng. & Scot.] --Sir T. More. Burns.
   [1913 Webster]