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.
2.
Also called scarlet gilia.a plant, Ipomopsis aggregata, of the phlox family, native to western North America, having finely divided leaves and clusters of red, trumpet-shaped flowers.
3.
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.
verb (used without object)
4.
to rise or increase rapidly or suddenly, especially to unexpected or unprecedented levels: Prices skyrocketed during the war.