Wordnet 3.0
NOUN (1)
1. 
 a large sum of money (especially as pay or profit); 
- Example: "she made a bundle selling real estate"- Example: "they sank megabucks into their new house"[syn: pile, bundle, big bucks, megabucks, big money]
WordNet (r) 3.0 (2006):
megabucks
    n 1: a large sum of money (especially as pay or profit); "she
         made a bundle selling real estate"; "they sank megabucks
         into their new house" [syn: pile, bundle, big bucks,
         megabucks, big money]