an occupation or profession, especially one requiring special training, followed as one's lifework: He sought a career as a lawyer.
2.
a person's progress or general course of action through life or through a phase of life, as in some profession or undertaking: His career as a soldier ended with the armistice.
3.
success in a profession, occupation, etc.
4.
a course, especially a swift one.
5.
speed, especially full speed: The horse stumbled in full career.
c.1534, "a running course" (especially of the sun, etc., across the sky), from M.Fr. carriere "road, racecourse," from O.Prov. carriera, from V.L. *(via) cararia "carriage (road), track for wheeled vehicles," from L. carrus "chariot" (see car). Sense of "course of a working
life" first attested 1803. The verb is first attested in 1594 from the notion of a horse "passing a career" on the jousting field, etc. Careerist is from 1917.