means The speed at which something moves, especially measured in a particular direction.

from Straight from Latin velocitas, "swiftness," built on velox, "fast" — the same swift root that sprints through words like velocipede, the early bicycle whose name literally promised "fast feet." English picked it up in the 1500s, and physics later gave it a sharper job, splitting it from plain "speed" by insisting it carry a direction along with the hurry.