HyperDic

English > 1 sense of the expression railroad flat:
NOUNartifactrailroad flatan apartment whose rooms are all in a line with doors / doors between them
English > railroad flat: 1 sense > noun 1, artifact
MeaningAn apartment whose rooms are all in a line with doors / doors between them.
Broaderapartment, flatA suite of rooms usually on one floor of an apartment house