Wordnet 3.0
NOUN (1)
1. 
 an insignificant sum of money; 
 a trifling amount; 
- Example: "her salary is peanuts compared to his"
WordNet (r) 3.0 (2006):
peanuts
    n 1: an insignificant sum of money; a trifling amount; "her
         salary is peanuts compared to his"