Pronunciation: (lān),[key] —n. 1. a narrow way or passage between hedges, fences, walls, or houses.
2. any narrow or well-defined passage, track, channel, or course.
3. a longitudinally marked part of a highway wide enough to accommodate one vehicle, often set off from adjacent lanes by painted lines (often used in combination): a new six-lane turnpike. 4. a fixed route followed by ocean steamers or airplanes.
5. (in a running or swimming race) the marked-off space or path within which a competitor must remain during the course of a race.
6. See bowling alley (def. 1).