<p><strong>Noun</strong></p><ul><li>a rocket firework that ascends into the air and explodes at a height, usually in a brilliant array of sparks of one or more colors.</li><li>Also called scarlet gilia.</li><li>a plant, <em>Ipomopsis aggregata</em>, of the phlox family, native to western North America, having finely divided leaves and clusters of red, trumpet-shaped flowers.</li><li>an organized group cheer, usually led by a cheerleader, as at a football or basketball game, which begins with a hissing or whistling and ends with a shout.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to rise or increase rapidly or suddenly, especially to unexpected or unprecedented levels: Prices skyrocketed during the war.</li><li>(used with object) to cause to rise or increase rapidly and usually suddenly: Economic changes have skyrocketed prices.</li><li>to thrust with sudden dramatic advancement; catapult: Talent has skyrocketed him to fame.</li></ul>