NOUN (3)

1. a historical area and former kingdom in northwestern Spain;

2. a city in northwestern Spain at the foot of the Cantabrian Mountains;

3. a city in central Mexico;

The Collaborative International Dictionary of English v.0.48:

Leon \Le"on\ (l[=e]"[o^]n), n.
   A lion. [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Leon
    n 1: a historical area and former kingdom in northwestern Spain
    2: a city in northwestern Spain at the foot of the Cantabrian
       Mountains
    3: a city in central Mexico