Wordnet 3.0
NOUN (1)
1. 
 someone who closely resembles a famous person (especially an actor); 
- Example: "he could be Gingrich's double"- Example: "she's the very image of her mother"[syn: double, image, look-alike]
ADJECTIVE (1)
1.  resembling closely; 
- Example: "they have look-alike cars"
WordNet (r) 3.0 (2006):
look-alike
    adj 1: resembling closely; "they have look-alike cars"
    n 1: someone who closely resembles a famous person (especially
         an actor); "he could be Gingrich's double"; "she's the very
         image of her mother" [syn: double, image, look-alike]