1
- a bar or series of bars, typically fixed on upright supports, serving as part of a fence or barrier or used to hang things on横条, 横杆, 横档; 栏杆, 扶手。
1.1
the rails
the inside boundary fence of a racecourse（赛马或赛狗场的）围栏。
1.2
- the edge of a surfboard or sailboard冲浪板（或帆板的）边缘。
2
- a steel bar or continuous line of bars laid on the ground as one of a pair forming a railway track铁轨, 钢轨; 轨道, 铁路：
the goods train left the rails.
货车出了轨。
2.1
- mass noun [often as modifier] railways as a means of transport铁路运输：
rail fares
火车票
travelling by rail.
乘火车旅行。
3
- a horizontal piece in the frame of a panelled door or sash window（镶板门或上下推拉窗的）横档, 冒头。比较STILE2.
4
- Electronics a conductor which is maintained at a fixed potential and to which other parts of a circuit are connected【电子】定电位导体轨。
1
- with obj. provide or enclose (a space or place) with a rail or rails给…装横档; 用栏杆围：
the altar is railed off from the nave.
圣坛与中殿之间由栏杆隔开。
2
- with obj. and adverbial of direction convey (goods) by rail由铁路运送（货物）：
perishables were trucked and railed into Manhattan.
易腐食品由汽车和火车运进曼哈顿。
3
- no obj.(in windsurfing) sail the board on its edge, so that it is at a sharp angle to the surface of the water（风帆冲浪用语）斜板滑行。
短语
go off the rails
- informal begin behaving in a strange, abnormal, or wildly uncontrolled way〈非正式〉行为不轨, 越轨; 出毛病; 神经错乱。
on the rails
1
- informal behaving or functioning in a normal or regulated way〈非正式〉在轨道上; 顺利, 顺遂, 正常：
he is determined to get the club back on the rails.
他决心使俱乐部回到正常轨道上来。
2
- (of a racehorse or jockey) in a position on the racetrack nearest the inside fence（赛马, 骑师）近内栏, 靠内栏。
派生词
railage
nounrailless
adjective词源
Middle English: from Old French reille 'iron rod', from Latin regula 'straight stick, rule'.
no obj.(rail against/at/about)
- complain or protest strongly and persistently about（强烈或反复地）抱怨; 责骂：
he railed at human fickleness.
他怒叱人性之无常。
派生词
railer
noun词源
late Middle English: from French railler, from Provençal ralhar 'to jest', based on an alteration of Latin rugire 'to bellow'.
1
- a secretive bird with drab grey and brown plumage, typically having a long bill and found in dense waterside vegetation秧鸡。
1.1
- Family Rallidae (the rail family): several genera, especially Rallus, and numerous species. The rail family also includes the crakes, gallinules, moorhens, and coots.秧鸡科：数属, 尤指秧鸡属, 多种。秧鸡科还包括长脚秧鸡、水鸡、黑水鸡和白骨顶。
词源
late Middle English: from Old Northern French raille, perhaps of imitative origin.