Wordnet 3.0
NOUN (1)
1.
a mountain in the Alps on the border between Switzerland and Italy (14,780 feet high);
noted for its distinctive shape;
The Collaborative International Dictionary of English v.0.48:
Matterhorn \Matterhorn\ prop. n.
A mountain in Italy and Switzerland, 14,690 feet high.
Note: According to WordNet, 14,780 feet high
[WordNet 1.5]
WordNet (r) 3.0 (2006):
Matterhorn
n 1: a mountain in the Alps on the border between Switzerland
and Italy (14,780 feet high); noted for its distinctive
shape