WordWeb Online

1. An insignificant student who is ridiculed as being affected or boringly studious
   - swot [Brit, informal], grind [N. Amer, informal], nerd [informal], dweeb [N. Amer, informal], nurd [informal, rare]
    
2. Someone who is very knowledgeable and enthusiastic (or obsessive) about a specific subject
   "a policy wonk";
   - geek

Derived forms: wonks

Type of: assimilator, learner, scholar, student

Encyclopedia: Wonk