Webster’s Revised Unabridged Dictionary · 1913
La
La (lä), n. (Mus.) (a) A syllable applied to the sixth tone of the scale in music in solmization. (b) The tone A; — so called among the French and Italians.
La (la̤), interj. [Cf. Lo.] 1. Look; see; behold; — sometimes followed by you. [Obs.] Shak.
2. An exclamation of surprise; — commonly followed by me; as, La me! [Low]