1) Ascend 2) Jump up 3) Rise 4) Shoot up 5) Soar 1) Go through the roof 2) Rise abruptly 3) Rise rapidly and suddenly 4) Rocket 5) To shoot up 6) To surge or spike 7) Type of firework 8) Visual signal 9) Zoom 
A skyrocket is a type of firework that uses a solid rocket motor to rise quickly into the sky. At the apex of its ascent, it is usual for a variety of effects (stars, bangs, crackles, etc.) to be emitted. Sky rockets use various stabilisation techniques to ensure the flight follows a predictable course, often a long stick attached to the side of t...
• (n.) A rocket that ascends high and burns as it flies; a species of fireworks.
Sky'rock`et noun A rocket that ascends high and burns as it flies; a species of fireworks. 
[n] - sends a firework display high into the sky
noun propels bright light high in the sky, or used to propel a lifesaving line or harpoon noun sends a firework display high into the sky