Search Result for "japan trench":
Wordnet 3.0

NOUN (1)

1. a depression in the floor of the Pacific Ocean to the northeast of Japan that reaches depths of 30,000 feet; 



WordNet (r) 3.0 (2006):

Japan Trench
    n 1: a depression in the floor of the Pacific Ocean to the
         northeast of Japan that reaches depths of 30,000 feet