τροχός (trochóstrokh-os'nounwheel)
[Grk] τροχός LN: 61.5, 67.83 GK: G5580 Hebrew: אֹופָן, גַּלְגַּל, מֹורַג
Derivation: from τρέχω;
Strong's: a wheel (as a runner), i.e. (figuratively) a circuit of physical effects
KJV: --course.
See: τρέχω