From Longman Dictionary of Contemporary Englishallegroal‧leg‧ro /əˈleɡrəʊ, əˈleɪ- $ -ɡroʊ/ noun (plural allegros) [countable] APMa piece of music played or sung quickly —allegro adjective, adverb
Examples from the Corpus
allegro• Half way through the final allegro the world came into existence again, as quietly and effortlessly as it had gone.Origin allegro (1600-1700) Italian “cheerfully”, from Latin alacer; → ALACRITY 