WordNet sense 1 (a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll):

track, rails

WordNet sense 2 (a barrier consisting of a horizontal bar and supports):

railing

WordNet sense 3 (enclose with rails):

rail in

WordNet sense 4 (separate with a railing):

rail off

WordNet sense 5 (travel by rail or train):

train

WordNet sense 6 (complain bitterly):

inveigh

WordNet sense 7 (spread negative information about):

revile, vilify, vituperate

WordNet sense 8 (criticize severely):

fulminate