Meaning

noun a ceremonial procession including people marching

noun an extended (often showy) succession of persons or things

noun a visible display

originFrom French parade (“an ostentatious display, a military display”), from parer (“to beautify, prepare, take pride in”) + -ade probably under influence from earlier Italian parata (“preparation, a military parade, an ostentatious display”) and Latin magnō parātū (“with great preparation”). Various senses similarly influenced by earlier French and Italian uses. Doublet of pare.

Etymology from Wiktionary, CC BY-SA 3.0