Wordnet 3.0
NOUN (1)
1. 
 the syllable naming the sixth (submediant) note of a major or minor scale in solmization; 
[syn: la, lah]
WordNet (r) 3.0 (2006):
lah
    n 1: the syllable naming the sixth (submediant) note of a major
         or minor scale in solmization [syn: la, lah]