Definition of lollapalooza in English:

lollapalooza

(also lalapalooza, lollapaloosa)

noun

North American
informal
  • A person or thing that is particularly impressive or attractive.

    ‘it's a lollapalooza, just like your other books’

Origin

Late 19th century: of fanciful formation.

Pronunciation

lollapalooza

/ˌläləpəˈlo͞ozə//ˌlɑləpəˈluzə/