Wordnet 3.0
NOUN (2)
1. 
 a native or inhabitant of Korea who speaks the Korean language; 
2. 
 the Altaic language spoken by Koreans; 
ADJECTIVE (1)
1. 
 of or relating to or characteristic of Korea or its people or language; 
- Example: "Korean handicrafts"
The Collaborative International Dictionary of English v.0.48:
Korean \Korean\ prop. a.
   Of or pertaining to Korea; as, Korean handicrafts; the Korean
   war.
   [WordNet 1.5]
WordNet (r) 3.0 (2006):
Korean
    adj 1: of or relating to or characteristic of Korea or its
           people or language; "Korean handicrafts"
    n 1: a native or inhabitant of Korea who speaks the Korean
         language
    2: the Altaic language spoken by Koreans