Webster's English Dictionary

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dope

1. dope \'do-p\ n [D doop sauce, fr. dopen to dip; akin to OE dyppan to dip 
   -] more at DIP 1a: a thick liquid or pasty preparation  1b: a preparation 
   for giving a desired quality to a substance or surface; (Xspecif : an 
   antiknock added to gasoline 2: absorbent or absorbent material used in 
   various manufacturing processes  (as the making of dynamite) 3a1: a 
   narcotic preparation; specif : OPIUM  3a2: a preparation given to a 
   racehorse to stimulate it temporarily  chiefly South  3a3: a cola drink  
   3b1: a narcotic addict  3b2: a stupid person  4: information esp. from a 
   reliable source 
2. dope vt 1: to treat or affect with dope; specif : to give a narcotic to  
   2: to find a solution for  : to take dope  - dop.er n