Meaning of LA in English
interj look; see; behold;
sometimes followed by you.
2. la ·noun the tone a;
so called among the french and italians.
3. la ·interj an exclamation of surprise;
commonly followed by me; as, la me!.
4. la ·noun a syllable applied to the sixth tone of the scale in music in solmization.
Webster English vocab. Английский словарь Webster. 2012