Wordnet 3.0
NOUN (1)
1. 
 the trait of appreciating (and being able to express) the humorous; 
- Example: "she didn't appreciate my humor"- Example: "you can't survive in the army without a sense of humor"[syn: humor, humour, sense of humor, sense of humour]
WordNet (r) 3.0 (2006):
sense of humor
    n 1: the trait of appreciating (and being able to express) the
         humorous; "she didn't appreciate my humor"; "you can't
         survive in the army without a sense of humor" [syn:
         humor, humour, sense of humor, sense of humour]