ˈ ̷ ̷ˌ ̷ ̷ noun
Usage: often attributive
1. : a device for producing a striking display (as of light, noise, or smoke) by the combustion of explosive or flammable compositions especially for exhibition, signaling, or illumination and typically consisting of a paper case containing combustible material (as charcoal, sulfur, or a metal powder), an oxidizing agent (as a nitrate or chlorate), and a metal salt as coloring agent if color is desired : pyrotechnic
the sodium rocket was not merely a beautiful … firework — Time
2. fireworks plural : a display of fireworks
the celebration was marked by fireworks and much oratory
3.
a. fireworks plural but sometimes singular in construction : a display of fiery temper, great excitement, or intense activity
whenever those two get together there were sure to be fireworks
political fireworks
a fireworks of rage — W.A.White
b. : a spectacular display (as of musical or verbal brilliance
a natural firework of … wit too good to print — Winthrop Sargeant
— usually used in plural
many Spanish dancers tend to overdo the fireworks — Dance Observer