The noun rail has 5 senses (first 2 from tagged texts)
1. (5) railing, rail -- (a barrier consisting of a horizontal bar and supports)
2. (3) rail -- (short for railway; "he traveled by rail"; "he was concerned with rail safety")
3. track, rail, rails -- (a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll)
4. rail -- (a horizontal bar (usually of wood))
5. rail -- (any of numerous widely distributed small wading birds of the family Rallidae having short wings and very long toes for running on soft mud)
Overview of verb rail
The verb rail has 10 senses (first 1 from tagged texts)
1. (2) rail, inveigh -- (complain bitterly)
2. rail, rail in -- (enclose with rails; "rail in the old graves")
3. rail -- (provide with rails; "The yard was railed")
4. rail, rail off -- (separate with a railing; "rail off the crowds from the Presidential palace")
5. rail -- (convey (goods etc.) by rails; "fresh fruit are railed from Italy to Belgium")
6. train, rail -- (travel by rail or train; "They railed from Rome to Venice"; "She trained to Hamburg")
7. rail -- (lay with rails; "hundreds of miles were railed out here")
8. rail -- (fish with a handline over the rails of a boat; "They are railing for fresh fish")
9. vilify, revile, vituperate, rail -- (spread negative information about; "The Nazi propaganda vilified the Jews")
10. fulminate, rail -- (criticize severely; "He fulminated against the Republicans' plan to cut Medicare"; "She railed against the bad social policies")