track (for trains etc); orbit (of a satellite); (fig.) a person's established path in life; desired trajectory (of a business or other endeavor); (audio engineering) track; (quantum mechanics) orbital

locus; orbit; trajectory; track

(Tw) (quantum mechanics) orbital

sleeper; tie

standard; criterion

to be derailed; to go off the rails; (fig.) to overstep the bounds; (fig.) to have an extramarital affair

rail; railroad track; CL:根[gen1]

the right track

to leave the rails; to derail; to jump the track

errant