1.Prosperity in an undertaking; favorable issue; success. "For common speed." "O Lord God of my master Abraham, I pray thee, send me good speed this day."
2.The act or state of moving swiftly; swiftness; velocity; rapidly; rate of motion; dispatch; as, the speed a horse or a vessel. "Speed, to describe whose swiftness number fails." Note: In kinematics, speedis sometimes used to denote the amount of velocity without regard to direction of motion, while velocity is not regarded as known unless both the direction and the amount are known.
3.One who, or that which, causes or promotes speed or success. (Obs.) "Hercules be thy speed!"
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