Wordnet 3.0
NOUN (2)
1. 
 the front of a shirt (usually the part not covered by a jacket); 
- Example: "he had spilled catsup on his shirtfront"2. 
 a man's detachable insert (usually starched) to simulate the front of a shirt; 
[syn: dickey, dickie, dicky, shirtfront]
WordNet (r) 3.0 (2006):
shirtfront
    n 1: the front of a shirt (usually the part not covered by a
         jacket); "he had spilled catsup on his shirtfront"
    2: a man's detachable insert (usually starched) to simulate the
       front of a shirt [syn: dickey, dickie, dicky,
       shirtfront]