Webster's English Dictionary

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fume

1. fume \'fyu:m\ \'fyu:-me-\ n [ME, fr. MF fum, fr. L fumus; akin to OHG 
   toumen to be fragra]nt, Gk thymos mind, spirit 1: a smoke, vapor, or gas 
   esp. when irritating or offensive {engine exhau st ~s} 2: something that 
   impairs one's reasoning  3: a state of excited irritation or anger  - fumy 
   aj
2. fume vt 1: to expose to or treat with fumes  2: to give off in fumes 
   {fuming thick black smoke}  1a: to emit fumes  1b: to act as if generating 
   fumes  2: to rise in or as if in fumes