- sidetrack (n.)
[sidetrack 词源字典]
- also side-track, "railway siding," 1835, from side (adj.) + track (n.). The verb meaning "to move (a train car) onto a sidetrack" is from 1874; figurative sense of "to divert from the main purpose" is attested from 1881. Related: Sidetracked.[sidetrack etymology, sidetrack origin, 英语词源]