Train of thought
A succession of connected ideas, a path of reasoning, as in You’ve interrupted my train of thought; now what was I saying? This idiom, which uses train in the sense of “an orderly sequence,” was first recorded in 1651, in philosopher Thomas Hobbes’s Leviathan.
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- Trainshed
noun 1. (in a railroad station) a shelter completely covering railroad tracks and their adjoining platforms.
- Trainsick
adjective 1. ill with train sickness.
- Train-sickness
noun 1. nausea and dizziness, sometimes accompanied by vomiting, resulting from the motion of the train in which one is traveling.
- Train smash
noun 1. (South African, informal) a disaster or serious setback (esp in the phrase it’s not a train smash)
- Trainspotterish
/ˈtreɪnˌspɒtərɪʃ/ adjective 1. (informal) obsessed with trivial details, esp of a subject generally considered uninteresting