Wordnet 3.0
NOUN (1)
1. 
 an insignificant student who is ridiculed as being affected or boringly studious; 
[syn: swot, grind, nerd, wonk, dweeb]
WordNet (r) 3.0 (2006):
wonk
    n 1: an insignificant student who is ridiculed as being affected
         or boringly studious [syn: swot, grind, nerd, wonk,
         dweeb]