crude in WordNet English dictionary

1. devoid of any qualifications or disguise or adornment
   "the blunt truth"; "the crude facts"; "facing the stark reality of the deadline"
   blunt  crude  stark 
   
2. not refined or processed
   "unrefined ore"; "crude oil"
   unrefined  unprocessed  crude 
   
3. belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
   "the crude weapons and rude agricultural implements of early man"; "primitive movies of the 1890s"; "primitive living conditions in the Appalachian mountains"
   crude  primitive  rude 
   
4. conspicuously and tastelessly indecent
   "coarse language"; "a crude joke"; "crude behavior"; "an earthy sense of humor"; "a revoltingly gross expletive"; "a vulgar gesture"; "full of language so vulgar it should have been edited"
   crude  earthy  gross  vulgar 
   
5. not processed or subjected to analysis
   "raw data"; "the raw cost of production"; "only the crude vital statistics"
   crude  raw 
   
6. not carefully or expertly made
   "managed to make a crude splint"; "a crude cabin of logs with bark still on them"; "rough carpentry"
   crude  rough 
   

1. a dark oil consisting mainly of hydrocarbons
   petroleum  crude oil  crude  rock oil  fossil oil  oil