Definition of bottle rocket in English:

bottle rocket

noun

  • 1North American North American a small rocket firework, often discharged from an empty bottle.

  • 2A model rocket made from an inverted plastic bottle that is partially filled with water, into which air is pumped until the resulting pressure forces the water out of the bottle's neck, propelling the bottle upwards.

Origin

1930s; earliest use found in Burlington (North Carolina) Daily Times-News.