Meaning of LA-LA LAND in English

ˈläˌlä- noun

Usage: sometimes capitalized all 3 Ls

Etymology: la-la perhaps from la-la , nonsense syllables in the refrains of songs expressing lightheartedness

: a euphoric dreamlike mental state detached from the harsher realities of life

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.