The phrase "first rocket" refers to the very first rocket that was ever created or launched. It signifies the beginning or origin of rockets as a form of transportation or a means to explore space. Full definition
HTV is scheduled for lift - off sometime between 10 September and the end of the month, on board the HII - B launch vehicle, which has never flown before — and the record of successful first rocket launches is poor. (newscientist.com)
On 8 December, a 10 - day launch window will open for the second flight of the Electron, one of the world's first rockets specifically designed to carry small satellites to orbit — a capability that intrigues many scientists. (sciencemag.org)
While rose gold first rocketed to popularity in 2017, it's still one of the most beloved shades in 2018. (lorealparisusa.com)