Wordnet 3.0
VERB (1)
1. 
 eat like a bird; 
- Example: "The anorexic girl just picks at her food"[syn: pick at, peck at, peck]
WordNet (r) 3.0 (2006):
peck at
    v 1: eat like a bird; "The anorexic girl just picks at her food"
         [syn: pick at, peck at, peck]