Wiktionary
rocket belt
n. 1 (context aviation English) a wearable backpack device using rocket thrust to propel a person into the air 2 (context aviation English) a wearable backpack device that can propel a person into the air 3 (context aviation English) a belt with rockets attached that can propel a person into the air
Usage examples of "rocket belt".
His paper on the rocket belt was enthusiastically received, and his demonstrations, using hydrazine procured by his Danish hosts, were a sensation.
After all, I wouldn't want Dick to miss a chance to fly a rocket belt.