B1
a small object that explodes to produce a loud noise and bright colors, often used to celebrate special events
Dictionary examples:
He bought fireworks to celebrate passing his driving test... on the tenth try. (0.0)
He tried to impress her with fireworks, but she preferred candlelight. (0.0)
The cat mistook the firework for a new toy and chased it. (0.0)
What time do the fireworks start? (17.5)
a fireworks display (21.5)
When it gets dark they'll set off the fireworks. (26.4)