Jet is an English word name with two sources: the glossy "black gemstone" that gave us the phrase jet-black, named after the ancient town of Gagai in Asia Minor, and the modern "jet plane", which lends the name speed. Short, punchy and only one syllable, it belongs with Ace, Rex and Colt among the brisk boys' names of recent years. Jet has hovered around the edge of the US top 1000 for a decade, with a best rank of number 1,139 in 2019, and stands at number 1,246 in 2025.